Finding the Fourth Proportional to 7,298.88, 10,072.69 and 3,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,298.88 : 10,072.69 = 3,986.88 : x
2. Step 2: Convert to fraction form
   7,298.88/10,072.69 = 3,986.88/x
3. Step 3: Cross multiply
   7,298.88x = 10,072.69 × 3,986.88
4. Step 4: Simplify right side
   7,298.88x = 40,158,606.31
5. Step 5: Solve for x
   x = 40,158,606.31/7,298.88
6. Step 6: Final answer
   x = 5,502.02