Finding the Fourth Proportional to 23,470.91, 32,390.61 and 12,861.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,470.91 : 32,390.61 = 12,861.22 : x
2. Step 2: Convert to fraction form
   23,470.91/32,390.61 = 12,861.22/x
3. Step 3: Cross multiply
   23,470.91x = 32,390.61 × 12,861.22
4. Step 4: Simplify right side
   23,470.91x = 416,582,761.14
5. Step 5: Solve for x
   x = 416,582,761.14/23,470.91
6. Step 6: Final answer
   x = 17,748.90