Finding the Fourth Proportional to 12,457.83, 17,187.48 and 7,984.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.83 : 17,187.48 = 7,984.04 : x
2. Step 2: Convert to fraction form
   12,457.83/17,187.48 = 7,984.04/x
3. Step 3: Cross multiply
   12,457.83x = 17,187.48 × 7,984.04
4. Step 4: Simplify right side
   12,457.83x = 137,225,527.82
5. Step 5: Solve for x
   x = 137,225,527.82/12,457.83
6. Step 6: Final answer
   x = 11,015.21