Finding the Fourth Proportional to 13,100.66, 18,079.02 and 7,132.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.66 : 18,079.02 = 7,132.37 : x
2. Step 2: Convert to fraction form
   13,100.66/18,079.02 = 7,132.37/x
3. Step 3: Cross multiply
   13,100.66x = 18,079.02 × 7,132.37
4. Step 4: Simplify right side
   13,100.66x = 128,946,259.88
5. Step 5: Solve for x
   x = 128,946,259.88/13,100.66
6. Step 6: Final answer
   x = 9,842.73