Finding the Fourth Proportional to 23,290.29, 32,140.89 and 12,679.92

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.29 : 32,140.89 = 12,679.92 : x
2. Step 2: Convert to fraction form
   23,290.29/32,140.89 = 12,679.92/x
3. Step 3: Cross multiply
   23,290.29x = 32,140.89 × 12,679.92
4. Step 4: Simplify right side
   23,290.29x = 407,543,913.93
5. Step 5: Solve for x
   x = 407,543,913.93/23,290.29
6. Step 6: Final answer
   x = 17,498.45