Finding the Fourth Proportional to 7,499.79, 11,247.26 and 3,116.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,499.79 : 11,247.26 = 3,116.07 : x
2. Step 2: Convert to fraction form
   7,499.79/11,247.26 = 3,116.07/x
3. Step 3: Cross multiply
   7,499.79x = 11,247.26 × 3,116.07
4. Step 4: Simplify right side
   7,499.79x = 35,047,233.89
5. Step 5: Solve for x
   x = 35,047,233.89/7,499.79
6. Step 6: Final answer
   x = 4,673.10