Finding the Fourth Proportional to 22,590.56, 31,174.50 and 12,518.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,590.56 : 31,174.50 = 12,518.96 : x
2. Step 2: Convert to fraction form
   22,590.56/31,174.50 = 12,518.96/x
3. Step 3: Cross multiply
   22,590.56x = 31,174.50 × 12,518.96
4. Step 4: Simplify right side
   22,590.56x = 390,272,318.52
5. Step 5: Solve for x
   x = 390,272,318.52/22,590.56
6. Step 6: Final answer
   x = 17,275.90