Finding the Fourth Proportional to 13,057.06, 18,018.76 and 7,088.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.06 : 18,018.76 = 7,088.72 : x
2. Step 2: Convert to fraction form
   13,057.06/18,018.76 = 7,088.72/x
3. Step 3: Cross multiply
   13,057.06x = 18,018.76 × 7,088.72
4. Step 4: Simplify right side
   13,057.06x = 127,729,944.39
5. Step 5: Solve for x
   x = 127,729,944.39/13,057.06
6. Step 6: Final answer
   x = 9,782.44