Finding the Fourth Proportional to 9,969.48, 15,013.86 and 9,083.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969.48 : 15,013.86 = 9,083.76 : x
2. Step 2: Convert to fraction form
   9,969.48/15,013.86 = 9,083.76/x
3. Step 3: Cross multiply
   9,969.48x = 15,013.86 × 9,083.76
4. Step 4: Simplify right side
   9,969.48x = 136,382,300.91
5. Step 5: Solve for x
   x = 136,382,300.91/9,969.48
6. Step 6: Final answer
   x = 13,679.98