Finding the Fourth Proportional to 22,598.86, 31,151.86 and 15,865.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,598.86 : 31,151.86 = 15,865.60 : x
2. Step 2: Convert to fraction form
   22,598.86/31,151.86 = 15,865.60/x
3. Step 3: Cross multiply
   22,598.86x = 31,151.86 × 15,865.60
4. Step 4: Simplify right side
   22,598.86x = 494,242,950.02
5. Step 5: Solve for x
   x = 494,242,950.02/22,598.86
6. Step 6: Final answer
   x = 21,870.26