Finding the Fourth Proportional to 22,469.57, 31,139.07 and 22,152.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,469.57 : 31,139.07 = 22,152.45 : x
2. Step 2: Convert to fraction form
   22,469.57/31,139.07 = 22,152.45/x
3. Step 3: Cross multiply
   22,469.57x = 31,139.07 × 22,152.45
4. Step 4: Simplify right side
   22,469.57x = 689,806,724.92
5. Step 5: Solve for x
   x = 689,806,724.92/22,469.57
6. Step 6: Final answer
   x = 30,699.60