Finding the Fourth Proportional to 5,443.86, 8,159.40 and 2,515.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.86 : 8,159.40 = 2,515.98 : x
2. Step 2: Convert to fraction form
   5,443.86/8,159.40 = 2,515.98/x
3. Step 3: Cross multiply
   5,443.86x = 8,159.40 × 2,515.98
4. Step 4: Simplify right side
   5,443.86x = 20,528,887.21
5. Step 5: Solve for x
   x = 20,528,887.21/5,443.86
6. Step 6: Final answer
   x = 3,771.02