Finding the Fourth Proportional to 6,499.93, 8,969.91 and 3,515.77

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.93 : 8,969.91 = 3,515.77 : x
2. Step 2: Convert to fraction form
   6,499.93/8,969.91 = 3,515.77/x
3. Step 3: Cross multiply
   6,499.93x = 8,969.91 × 3,515.77
4. Step 4: Simplify right side
   6,499.93x = 31,536,140.48
5. Step 5: Solve for x
   x = 31,536,140.48/6,499.93
6. Step 6: Final answer
   x = 4,851.77