Finding the Fourth Proportional to 13,057.28, 18,018.56 and 7,088.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.28 : 18,018.56 = 7,088.82 : x
2. Step 2: Convert to fraction form
   13,057.28/18,018.56 = 7,088.82/x
3. Step 3: Cross multiply
   13,057.28x = 18,018.56 × 7,088.82
4. Step 4: Simplify right side
   13,057.28x = 127,730,328.50
5. Step 5: Solve for x
   x = 127,730,328.50/13,057.28
6. Step 6: Final answer
   x = 9,782.31