Finding the Fourth Proportional to 16,713.78, 23,059.32 and 9,538.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,713.78 : 23,059.32 = 9,538.55 : x
2. Step 2: Convert to fraction form
   16,713.78/23,059.32 = 9,538.55/x
3. Step 3: Cross multiply
   16,713.78x = 23,059.32 × 9,538.55
4. Step 4: Simplify right side
   16,713.78x = 219,952,476.79
5. Step 5: Solve for x
   x = 219,952,476.79/16,713.78
6. Step 6: Final answer
   x = 13,159.95