Finding the Fourth Proportional to 11,499.49, 15,868.94 and 6,463.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.49 : 15,868.94 = 6,463.59 : x
2. Step 2: Convert to fraction form
   11,499.49/15,868.94 = 6,463.59/x
3. Step 3: Cross multiply
   11,499.49x = 15,868.94 × 6,463.59
4. Step 4: Simplify right side
   11,499.49x = 102,570,321.89
5. Step 5: Solve for x
   x = 102,570,321.89/11,499.49
6. Step 6: Final answer
   x = 8,919.55