Finding the Fourth Proportional to 22,958.98, 31,683.35 and 12,887.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,958.98 : 31,683.35 = 12,887.43 : x
2. Step 2: Convert to fraction form
   22,958.98/31,683.35 = 12,887.43/x
3. Step 3: Cross multiply
   22,958.98x = 31,683.35 × 12,887.43
4. Step 4: Simplify right side
   22,958.98x = 408,316,868.70
5. Step 5: Solve for x
   x = 408,316,868.70/22,958.98
6. Step 6: Final answer
   x = 17,784.63