Finding the Fourth Proportional to 22,632.72, 31,233.35 and 13,686.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,632.72 : 31,233.35 = 13,686.20 : x
2. Step 2: Convert to fraction form
   22,632.72/31,233.35 = 13,686.20/x
3. Step 3: Cross multiply
   22,632.72x = 31,233.35 × 13,686.20
4. Step 4: Simplify right side
   22,632.72x = 427,465,874.77
5. Step 5: Solve for x
   x = 427,465,874.77/22,632.72
6. Step 6: Final answer
   x = 18,887.07