Finding the Fourth Proportional to 22,552.08, 31,123.82 and 13,120

Step by Step Solution

1. Step 1: Write the proportion equation
   22,552.08 : 31,123.82 = 13,120 : x
2. Step 2: Convert to fraction form
   22,552.08/31,123.82 = 13,120/x
3. Step 3: Cross multiply
   22,552.08x = 31,123.82 × 13,120
4. Step 4: Simplify right side
   22,552.08x = 408,344,518.40
5. Step 5: Solve for x
   x = 408,344,518.40/22,552.08
6. Step 6: Final answer
   x = 18,106.73