Finding the Fourth Proportional to 7,877.54, 10,870.98 and 4,340.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,877.54 : 10,870.98 = 4,340.72 : x
2. Step 2: Convert to fraction form
   7,877.54/10,870.98 = 4,340.72/x
3. Step 3: Cross multiply
   7,877.54x = 10,870.98 × 4,340.72
4. Step 4: Simplify right side
   7,877.54x = 47,187,880.31
5. Step 5: Solve for x
   x = 47,187,880.31/7,877.54
6. Step 6: Final answer
   x = 5,990.18