Finding the Fourth Proportional to 12,315.77, 18,474.05 and 3,550.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.77 : 18,474.05 = 3,550.76 : x
2. Step 2: Convert to fraction form
   12,315.77/18,474.05 = 3,550.76/x
3. Step 3: Cross multiply
   12,315.77x = 18,474.05 × 3,550.76
4. Step 4: Simplify right side
   12,315.77x = 65,596,834.28
5. Step 5: Solve for x
   x = 65,596,834.28/12,315.77
6. Step 6: Final answer
   x = 5,326.25