Finding the Fourth Proportional to 13,132.41, 18,122.71 and 7,164.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,132.41 : 18,122.71 = 7,164.07 : x
2. Step 2: Convert to fraction form
   13,132.41/18,122.71 = 7,164.07/x
3. Step 3: Cross multiply
   13,132.41x = 18,122.71 × 7,164.07
4. Step 4: Simplify right side
   13,132.41x = 129,832,363.03
5. Step 5: Solve for x
   x = 129,832,363.03/13,132.41
6. Step 6: Final answer
   x = 9,886.41