Finding the Fourth Proportional to 12,111.29, 16,713.34 and 7,395.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.29 : 16,713.34 = 7,395.57 : x
2. Step 2: Convert to fraction form
   12,111.29/16,713.34 = 7,395.57/x
3. Step 3: Cross multiply
   12,111.29x = 16,713.34 × 7,395.57
4. Step 4: Simplify right side
   12,111.29x = 123,604,555.36
5. Step 5: Solve for x
   x = 123,604,555.36/12,111.29
6. Step 6: Final answer
   x = 10,205.73