Finding the Fourth Proportional to 10,785.84, 16,171.98 and 4,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.84 : 16,171.98 = 4,861.50 : x
2. Step 2: Convert to fraction form
   10,785.84/16,171.98 = 4,861.50/x
3. Step 3: Cross multiply
   10,785.84x = 16,171.98 × 4,861.50
4. Step 4: Simplify right side
   10,785.84x = 78,620,080.77
5. Step 5: Solve for x
   x = 78,620,080.77/10,785.84
6. Step 6: Final answer
   x = 7,289.19