Finding the Fourth Proportional to 10,498.04, 14,491.86 and 7,980.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,498.04 : 14,491.86 = 7,980.60 : x
2. Step 2: Convert to fraction form
   10,498.04/14,491.86 = 7,980.60/x
3. Step 3: Cross multiply
   10,498.04x = 14,491.86 × 7,980.60
4. Step 4: Simplify right side
   10,498.04x = 115,653,737.92
5. Step 5: Solve for x
   x = 115,653,737.92/10,498.04
6. Step 6: Final answer
   x = 11,016.70