Finding the Fourth Proportional to 23,190.18, 32,002.20 and 12,579.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,190.18 : 32,002.20 = 12,579.72 : x
2. Step 2: Convert to fraction form
   23,190.18/32,002.20 = 12,579.72/x
3. Step 3: Cross multiply
   23,190.18x = 32,002.20 × 12,579.72
4. Step 4: Simplify right side
   23,190.18x = 402,578,715.38
5. Step 5: Solve for x
   x = 402,578,715.38/23,190.18
6. Step 6: Final answer
   x = 17,359.88