Finding the Fourth Proportional to 6,899.94, 10,355.12 and 5,055.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,899.94 : 10,355.12 = 5,055.78 : x
2. Step 2: Convert to fraction form
   6,899.94/10,355.12 = 5,055.78/x
3. Step 3: Cross multiply
   6,899.94x = 10,355.12 × 5,055.78
4. Step 4: Simplify right side
   6,899.94x = 52,353,208.59
5. Step 5: Solve for x
   x = 52,353,208.59/6,899.94
6. Step 6: Final answer
   x = 7,587.49