Finding the Fourth Proportional to 12,300.76, 18,454.83 and 5,730.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.76 : 18,454.83 = 5,730.85 : x
2. Step 2: Convert to fraction form
   12,300.76/18,454.83 = 5,730.85/x
3. Step 3: Cross multiply
   12,300.76x = 18,454.83 × 5,730.85
4. Step 4: Simplify right side
   12,300.76x = 105,761,862.51
5. Step 5: Solve for x
   x = 105,761,862.51/12,300.76
6. Step 6: Final answer
   x = 8,597.99