Finding the Fourth Proportional to 10,643.11, 14,663.02 and 8,404.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,643.11 : 14,663.02 = 8,404.15 : x
2. Step 2: Convert to fraction form
   10,643.11/14,663.02 = 8,404.15/x
3. Step 3: Cross multiply
   10,643.11x = 14,663.02 × 8,404.15
4. Step 4: Simplify right side
   10,643.11x = 123,230,219.53
5. Step 5: Solve for x
   x = 123,230,219.53/10,643.11
6. Step 6: Final answer
   x = 11,578.40