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Finding the Fourth Proportional to 12,810.71, 19,216.64 and 3,925.40

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Solution

The fourth proportional to 12,810.71, 19,216.64 and 3,925.40 is: 5,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.71 : 19,216.64 = 3,925.40 : x
  2. Step 2: Convert to fraction form
    12,810.71/19,216.64 = 3,925.40/x
  3. Step 3: Cross multiply
    12,810.71x = 19,216.64 × 3,925.40
  4. Step 4: Simplify right side
    12,810.71x = 75,432,882.95
  5. Step 5: Solve for x
    x = 75,432,882.95/12,810.71
  6. Step 6: Final answer
    x = 5,888.27

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