Finding the Fourth Proportional to 5,552.29, 7,647.78 and 3,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,552.29 : 7,647.78 = 3,870.69 : x
2. Step 2: Convert to fraction form
   5,552.29/7,647.78 = 3,870.69/x
3. Step 3: Cross multiply
   5,552.29x = 7,647.78 × 3,870.69
4. Step 4: Simplify right side
   5,552.29x = 29,602,185.57
5. Step 5: Solve for x
   x = 29,602,185.57/5,552.29
6. Step 6: Final answer
   x = 5,331.53