Finding the Fourth Proportional to 13,088.33, 18,061.71 and 7,120.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,088.33 : 18,061.71 = 7,120.04 : x
2. Step 2: Convert to fraction form
   13,088.33/18,061.71 = 7,120.04/x
3. Step 3: Cross multiply
   13,088.33x = 18,061.71 × 7,120.04
4. Step 4: Simplify right side
   13,088.33x = 128,600,097.67
5. Step 5: Solve for x
   x = 128,600,097.67/13,088.33
6. Step 6: Final answer
   x = 9,825.55