Finding the Fourth Proportional to 11,785.96, 17,686.50 and 4,861

Step by Step Solution

1. Step 1: Write the proportion equation
   11,785.96 : 17,686.50 = 4,861 : x
2. Step 2: Convert to fraction form
   11,785.96/17,686.50 = 4,861/x
3. Step 3: Cross multiply
   11,785.96x = 17,686.50 × 4,861
4. Step 4: Simplify right side
   11,785.96x = 85,974,076.50
5. Step 5: Solve for x
   x = 85,974,076.50/11,785.96
6. Step 6: Final answer
   x = 7,294.62