Finding the Fourth Proportional to 13,057.04, 18,018.72 and 7,088.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.04 : 18,018.72 = 7,088.70 : x
2. Step 2: Convert to fraction form
   13,057.04/18,018.72 = 7,088.70/x
3. Step 3: Cross multiply
   13,057.04x = 18,018.72 × 7,088.70
4. Step 4: Simplify right side
   13,057.04x = 127,729,300.46
5. Step 5: Solve for x
   x = 127,729,300.46/13,057.04
6. Step 6: Final answer
   x = 9,782.41