Finding the Fourth Proportional to 23,507.72, 32,442.70 and 12,899.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,507.72 : 32,442.70 = 12,899.42 : x
2. Step 2: Convert to fraction form
   23,507.72/32,442.70 = 12,899.42/x
3. Step 3: Cross multiply
   23,507.72x = 32,442.70 × 12,899.42
4. Step 4: Simplify right side
   23,507.72x = 418,492,013.23
5. Step 5: Solve for x
   x = 418,492,013.23/23,507.72
6. Step 6: Final answer
   x = 17,802.32