Finding the Fourth Proportional to 6,401.88, 9,587.34 and 5,298.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.88 : 9,587.34 = 5,298.12 : x
2. Step 2: Convert to fraction form
   6,401.88/9,587.34 = 5,298.12/x
3. Step 3: Cross multiply
   6,401.88x = 9,587.34 × 5,298.12
4. Step 4: Simplify right side
   6,401.88x = 50,794,877.80
5. Step 5: Solve for x
   x = 50,794,877.80/6,401.88
6. Step 6: Final answer
   x = 7,934.37