Finding the Fourth Proportional to 7,288.64, 10,925.42 and 3,994.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,288.64 : 10,925.42 = 3,994.78 : x
2. Step 2: Convert to fraction form
   7,288.64/10,925.42 = 3,994.78/x
3. Step 3: Cross multiply
   7,288.64x = 10,925.42 × 3,994.78
4. Step 4: Simplify right side
   7,288.64x = 43,644,649.31
5. Step 5: Solve for x
   x = 43,644,649.31/7,288.64
6. Step 6: Final answer
   x = 5,988.04