Finding the Fourth Proportional to 22,581.86, 31,161.72 and 12,509.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.86 : 31,161.72 = 12,509.50 : x
2. Step 2: Convert to fraction form
   22,581.86/31,161.72 = 12,509.50/x
3. Step 3: Cross multiply
   22,581.86x = 31,161.72 × 12,509.50
4. Step 4: Simplify right side
   22,581.86x = 389,817,536.34
5. Step 5: Solve for x
   x = 389,817,536.34/22,581.86
6. Step 6: Final answer
   x = 17,262.42