Finding the Fourth Proportional to 13,071.97, 18,039.30 and 7,103.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.97 : 18,039.30 = 7,103.62 : x
2. Step 2: Convert to fraction form
   13,071.97/18,039.30 = 7,103.62/x
3. Step 3: Cross multiply
   13,071.97x = 18,039.30 × 7,103.62
4. Step 4: Simplify right side
   13,071.97x = 128,144,328.18
5. Step 5: Solve for x
   x = 128,144,328.18/13,071.97
6. Step 6: Final answer
   x = 9,802.99