Finding the Fourth Proportional to 22,686.47, 31,307.42 and 15,600.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,686.47 : 31,307.42 = 15,600.59 : x
2. Step 2: Convert to fraction form
   22,686.47/31,307.42 = 15,600.59/x
3. Step 3: Cross multiply
   22,686.47x = 31,307.42 × 15,600.59
4. Step 4: Simplify right side
   22,686.47x = 488,414,145.37
5. Step 5: Solve for x
   x = 488,414,145.37/22,686.47
6. Step 6: Final answer
   x = 21,528.87