Finding the Fourth Proportional to 5,449.86, 8,168.40 and 2,521.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,449.86 : 8,168.40 = 2,521.98 : x
2. Step 2: Convert to fraction form
   5,449.86/8,168.40 = 2,521.98/x
3. Step 3: Cross multiply
   5,449.86x = 8,168.40 × 2,521.98
4. Step 4: Simplify right side
   5,449.86x = 20,600,541.43
5. Step 5: Solve for x
   x = 20,600,541.43/5,449.86
6. Step 6: Final answer
   x = 3,780.01