Finding the Fourth Proportional to 8,418.56, 11,615.28 and 5,434.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,418.56 : 11,615.28 = 5,434.52 : x
2. Step 2: Convert to fraction form
   8,418.56/11,615.28 = 5,434.52/x
3. Step 3: Cross multiply
   8,418.56x = 11,615.28 × 5,434.52
4. Step 4: Simplify right side
   8,418.56x = 63,123,471.47
5. Step 5: Solve for x
   x = 63,123,471.47/8,418.56
6. Step 6: Final answer
   x = 7,498.13