Finding the Fourth Proportional to 17,465.79, 24,124.53 and 12,678.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,465.79 : 24,124.53 = 12,678.15 : x
2. Step 2: Convert to fraction form
   17,465.79/24,124.53 = 12,678.15/x
3. Step 3: Cross multiply
   17,465.79x = 24,124.53 × 12,678.15
4. Step 4: Simplify right side
   17,465.79x = 305,854,410.02
5. Step 5: Solve for x
   x = 305,854,410.02/17,465.79
6. Step 6: Final answer
   x = 17,511.63