Finding the Fourth Proportional to 5,422.53, 7,426.89 and 5,103.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,422.53 : 7,426.89 = 5,103.28 : x
2. Step 2: Convert to fraction form
   5,422.53/7,426.89 = 5,103.28/x
3. Step 3: Cross multiply
   5,422.53x = 7,426.89 × 5,103.28
4. Step 4: Simplify right side
   5,422.53x = 37,901,499.20
5. Step 5: Solve for x
   x = 37,901,499.20/5,422.53
6. Step 6: Final answer
   x = 6,989.63