Finding the Fourth Proportional to 13,100.96, 18,079.43 and 7,132.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.96 : 18,079.43 = 7,132.64 : x
2. Step 2: Convert to fraction form
   13,100.96/18,079.43 = 7,132.64/x
3. Step 3: Cross multiply
   13,100.96x = 18,079.43 × 7,132.64
4. Step 4: Simplify right side
   13,100.96x = 128,953,939.53
5. Step 5: Solve for x
   x = 128,953,939.53/13,100.96
6. Step 6: Final answer
   x = 9,843.09