Finding the Fourth Proportional to 12,617.58, 17,412 and 7,904.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,617.58 : 17,412 = 7,904.46 : x
2. Step 2: Convert to fraction form
   12,617.58/17,412 = 7,904.46/x
3. Step 3: Cross multiply
   12,617.58x = 17,412 × 7,904.46
4. Step 4: Simplify right side
   12,617.58x = 137,632,457.52
5. Step 5: Solve for x
   x = 137,632,457.52/12,617.58
6. Step 6: Final answer
   x = 10,907.99