Finding the Fourth Proportional to 22,868.32, 31,557.96 and 12,520.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,868.32 : 31,557.96 = 12,520.12 : x
2. Step 2: Convert to fraction form
   22,868.32/31,557.96 = 12,520.12/x
3. Step 3: Cross multiply
   22,868.32x = 31,557.96 × 12,520.12
4. Step 4: Simplify right side
   22,868.32x = 395,109,446.16
5. Step 5: Solve for x
   x = 395,109,446.16/22,868.32
6. Step 6: Final answer
   x = 17,277.59