Finding the Fourth Proportional to 13,057.47, 18,018.81 and 7,088.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.47 : 18,018.81 = 7,088.99 : x
2. Step 2: Convert to fraction form
   13,057.47/18,018.81 = 7,088.99/x
3. Step 3: Cross multiply
   13,057.47x = 18,018.81 × 7,088.99
4. Step 4: Simplify right side
   13,057.47x = 127,735,073.81
5. Step 5: Solve for x
   x = 127,735,073.81/13,057.47
6. Step 6: Final answer
   x = 9,782.53