Finding the Fourth Proportional to 11,861.16, 16,371.81 and 7,830.93

Step by Step Solution

1. Step 1: Write the proportion equation
   11,861.16 : 16,371.81 = 7,830.93 : x
2. Step 2: Convert to fraction form
   11,861.16/16,371.81 = 7,830.93/x
3. Step 3: Cross multiply
   11,861.16x = 16,371.81 × 7,830.93
4. Step 4: Simplify right side
   11,861.16x = 128,206,498.08
5. Step 5: Solve for x
   x = 128,206,498.08/11,861.16
6. Step 6: Final answer
   x = 10,808.93