Finding the Fourth Proportional to 13,071.95, 18,039.25 and 7,103.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.95 : 18,039.25 = 7,103.61 : x
2. Step 2: Convert to fraction form
   13,071.95/18,039.25 = 7,103.61/x
3. Step 3: Cross multiply
   13,071.95x = 18,039.25 × 7,103.61
4. Step 4: Simplify right side
   13,071.95x = 128,143,805.57
5. Step 5: Solve for x
   x = 128,143,805.57/13,071.95
6. Step 6: Final answer
   x = 9,802.96