Finding the Fourth Proportional to 23,253.31, 32,090.88 and 12,642.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,253.31 : 32,090.88 = 12,642.72 : x
2. Step 2: Convert to fraction form
   23,253.31/32,090.88 = 12,642.72/x
3. Step 3: Cross multiply
   23,253.31x = 32,090.88 × 12,642.72
4. Step 4: Simplify right side
   23,253.31x = 405,716,010.39
5. Step 5: Solve for x
   x = 405,716,010.39/23,253.31
6. Step 6: Final answer
   x = 17,447.67