Finding the Fourth Proportional to 6,870.17, 9,480.80 and 3,726.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.17 : 9,480.80 = 3,726.35 : x
2. Step 2: Convert to fraction form
   6,870.17/9,480.80 = 3,726.35/x
3. Step 3: Cross multiply
   6,870.17x = 9,480.80 × 3,726.35
4. Step 4: Simplify right side
   6,870.17x = 35,328,808.91
5. Step 5: Solve for x
   x = 35,328,808.91/6,870.17
6. Step 6: Final answer
   x = 5,142.35