Finding the Fourth Proportional to 19,642.31, 29,463.31 and 13,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,642.31 : 29,463.31 = 13,008.50 : x
2. Step 2: Convert to fraction form
   19,642.31/29,463.31 = 13,008.50/x
3. Step 3: Cross multiply
   19,642.31x = 29,463.31 × 13,008.50
4. Step 4: Simplify right side
   19,642.31x = 383,273,435.61
5. Step 5: Solve for x
   x = 383,273,435.61/19,642.31
6. Step 6: Final answer
   x = 19,512.65