Finding the Fourth Proportional to 5,114.72, 7,672.80 and 1,994.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,114.72 : 7,672.80 = 1,994.16 : x
2. Step 2: Convert to fraction form
   5,114.72/7,672.80 = 1,994.16/x
3. Step 3: Cross multiply
   5,114.72x = 7,672.80 × 1,994.16
4. Step 4: Simplify right side
   5,114.72x = 15,300,790.85
5. Step 5: Solve for x
   x = 15,300,790.85/5,114.72
6. Step 6: Final answer
   x = 2,991.52