Finding the Fourth Proportional to 13,132.41, 18,123.12 and 7,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,132.41 : 18,123.12 = 7,164.42 : x
2. Step 2: Convert to fraction form
   13,132.41/18,123.12 = 7,164.42/x
3. Step 3: Cross multiply
   13,132.41x = 18,123.12 × 7,164.42
4. Step 4: Simplify right side
   13,132.41x = 129,841,643.39
5. Step 5: Solve for x
   x = 129,841,643.39/13,132.41
6. Step 6: Final answer
   x = 9,887.11