Finding the Fourth Proportional to 5,434.79, 7,499.99 and 3,077.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,434.79 : 7,499.99 = 3,077.15 : x
2. Step 2: Convert to fraction form
   5,434.79/7,499.99 = 3,077.15/x
3. Step 3: Cross multiply
   5,434.79x = 7,499.99 × 3,077.15
4. Step 4: Simplify right side
   5,434.79x = 23,078,564.42
5. Step 5: Solve for x
   x = 23,078,564.42/5,434.79
6. Step 6: Final answer
   x = 4,246.45