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Finding the Fourth Proportional to 13,978,509.72, 19,285,719.57 and 8,173,181.40

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Solution

The fourth proportional to 13,978,509.72, 19,285,719.57 and 8,173,181.40 is: 11,276,286.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,978,509.72 : 19,285,719.57 = 8,173,181.40 : x
  2. Step 2: Convert to fraction form
    13,978,509.72/19,285,719.57 = 8,173,181.40/x
  3. Step 3: Cross multiply
    13,978,509.72x = 19,285,719.57 × 8,173,181.40
  4. Step 4: Simplify right side
    13,978,509.72x = 157,625,684,475,140
  5. Step 5: Solve for x
    x = 157,625,684,475,140/13,978,509.72
  6. Step 6: Final answer
    x = 11,276,286.79

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