Finding the Fourth Proportional to 5,291.74, 7,868.35 and 5,070.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,291.74 : 7,868.35 = 5,070.29 : x
2. Step 2: Convert to fraction form
   5,291.74/7,868.35 = 5,070.29/x
3. Step 3: Cross multiply
   5,291.74x = 7,868.35 × 5,070.29
4. Step 4: Simplify right side
   5,291.74x = 39,894,816.32
5. Step 5: Solve for x
   x = 39,894,816.32/5,291.74
6. Step 6: Final answer
   x = 7,539.07