Finding the Fourth Proportional to 5,578.63, 8,364.70 and 2,980.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578.63 : 8,364.70 = 2,980.15 : x
2. Step 2: Convert to fraction form
   5,578.63/8,364.70 = 2,980.15/x
3. Step 3: Cross multiply
   5,578.63x = 8,364.70 × 2,980.15
4. Step 4: Simplify right side
   5,578.63x = 24,928,060.71
5. Step 5: Solve for x
   x = 24,928,060.71/5,578.63
6. Step 6: Final answer
   x = 4,468.49