Finding the Fourth Proportional to 4,685.31, 6,988.31 and 4,064.07

Step by Step Solution

1. Step 1: Write the proportion equation
   4,685.31 : 6,988.31 = 4,064.07 : x
2. Step 2: Convert to fraction form
   4,685.31/6,988.31 = 4,064.07/x
3. Step 3: Cross multiply
   4,685.31x = 6,988.31 × 4,064.07
4. Step 4: Simplify right side
   4,685.31x = 28,401,002.15
5. Step 5: Solve for x
   x = 28,401,002.15/4,685.31
6. Step 6: Final answer
   x = 6,061.71