Finding the Fourth Proportional to 13,100.91, 18,080.62 and 7,437.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.91 : 18,080.62 = 7,437.18 : x
2. Step 2: Convert to fraction form
   13,100.91/18,080.62 = 7,437.18/x
3. Step 3: Cross multiply
   13,100.91x = 18,080.62 × 7,437.18
4. Step 4: Simplify right side
   13,100.91x = 134,468,874.66
5. Step 5: Solve for x
   x = 134,468,874.66/13,100.91
6. Step 6: Final answer
   x = 10,264.09