Finding the Fourth Proportional to 4,070.96, 6,109.52 and 2,978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,070.96 : 6,109.52 = 2,978.15 : x
2. Step 2: Convert to fraction form
   4,070.96/6,109.52 = 2,978.15/x
3. Step 3: Cross multiply
   4,070.96x = 6,109.52 × 2,978.15
4. Step 4: Simplify right side
   4,070.96x = 18,195,043.89
5. Step 5: Solve for x
   x = 18,195,043.89/4,070.96
6. Step 6: Final answer
   x = 4,469.47