Finding the Fourth Proportional to 9,690.52, 13,375.04 and 5,710.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,690.52 : 13,375.04 = 5,710.20 : x
2. Step 2: Convert to fraction form
   9,690.52/13,375.04 = 5,710.20/x
3. Step 3: Cross multiply
   9,690.52x = 13,375.04 × 5,710.20
4. Step 4: Simplify right side
   9,690.52x = 76,374,153.41
5. Step 5: Solve for x
   x = 76,374,153.41/9,690.52
6. Step 6: Final answer
   x = 7,881.33