Finding the Fourth Proportional to 22,387.71, 30,877.55 and 13,885.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,387.71 : 30,877.55 = 13,885.06 : x
2. Step 2: Convert to fraction form
   22,387.71/30,877.55 = 13,885.06/x
3. Step 3: Cross multiply
   22,387.71x = 30,877.55 × 13,885.06
4. Step 4: Simplify right side
   22,387.71x = 428,736,675.92
5. Step 5: Solve for x
   x = 428,736,675.92/22,387.71
6. Step 6: Final answer
   x = 19,150.54