Finding the Fourth Proportional to 22,963.55, 31,697.69 and 13,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,963.55 : 31,697.69 = 13,531.50 : x
2. Step 2: Convert to fraction form
   22,963.55/31,697.69 = 13,531.50/x
3. Step 3: Cross multiply
   22,963.55x = 31,697.69 × 13,531.50
4. Step 4: Simplify right side
   22,963.55x = 428,917,224.58
5. Step 5: Solve for x
   x = 428,917,224.58/22,963.55
6. Step 6: Final answer
   x = 18,678.18