Finding the Fourth Proportional to 22,642.82, 31,238.52 and 16,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,642.82 : 31,238.52 = 16,688.72 : x
2. Step 2: Convert to fraction form
   22,642.82/31,238.52 = 16,688.72/x
3. Step 3: Cross multiply
   22,642.82x = 31,238.52 × 16,688.72
4. Step 4: Simplify right side
   22,642.82x = 521,330,913.49
5. Step 5: Solve for x
   x = 521,330,913.49/22,642.82
6. Step 6: Final answer
   x = 23,024.12