Finding the Fourth Proportional to 12,111.96, 16,715.39 and 7,397.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.96 : 16,715.39 = 7,397.13 : x
2. Step 2: Convert to fraction form
   12,111.96/16,715.39 = 7,397.13/x
3. Step 3: Cross multiply
   12,111.96x = 16,715.39 × 7,397.13
4. Step 4: Simplify right side
   12,111.96x = 123,645,875.85
5. Step 5: Solve for x
   x = 123,645,875.85/12,111.96
6. Step 6: Final answer
   x = 10,208.58