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Finding the Fourth Proportional to 12,916,978.20, 19,368,468.90 and 5,344,709.40

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Solution

The fourth proportional to 12,916,978.20, 19,368,468.90 and 5,344,709.40 is: 8,014,168.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916,978.20 : 19,368,468.90 = 5,344,709.40 : x
  2. Step 2: Convert to fraction form
    12,916,978.20/19,368,468.90 = 5,344,709.40/x
  3. Step 3: Cross multiply
    12,916,978.20x = 19,368,468.90 × 5,344,709.40
  4. Step 4: Simplify right side
    12,916,978.20x = 103,518,837,793,437.66
  5. Step 5: Solve for x
    x = 103,518,837,793,437.66/12,916,978.20
  6. Step 6: Final answer
    x = 8,014,168.34

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