Finding the Fourth Proportional to 11,679.60, 16,113.72 and 7,490.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,679.60 : 16,113.72 = 7,490.16 : x
2. Step 2: Convert to fraction form
   11,679.60/16,113.72 = 7,490.16/x
3. Step 3: Cross multiply
   11,679.60x = 16,113.72 × 7,490.16
4. Step 4: Simplify right side
   11,679.60x = 120,694,341.00
5. Step 5: Solve for x
   x = 120,694,341.00/11,679.60
6. Step 6: Final answer
   x = 10,333.77