Finding the Fourth Proportional to 22,528.15, 31,088.30 and 12,456.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,528.15 : 31,088.30 = 12,456.34 : x
2. Step 2: Convert to fraction form
   22,528.15/31,088.30 = 12,456.34/x
3. Step 3: Cross multiply
   22,528.15x = 31,088.30 × 12,456.34
4. Step 4: Simplify right side
   22,528.15x = 387,246,434.82
5. Step 5: Solve for x
   x = 387,246,434.82/22,528.15
6. Step 6: Final answer
   x = 17,189.45