Finding the Fourth Proportional to 6,089.40, 8,388.90 and 5,020.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,089.40 : 8,388.90 = 5,020.20 : x
2. Step 2: Convert to fraction form
   6,089.40/8,388.90 = 5,020.20/x
3. Step 3: Cross multiply
   6,089.40x = 8,388.90 × 5,020.20
4. Step 4: Simplify right side
   6,089.40x = 42,113,955.78
5. Step 5: Solve for x
   x = 42,113,955.78/6,089.40
6. Step 6: Final answer
   x = 6,915.95