Finding the Fourth Proportional to 10,686.71, 16,031.58 and 3,291.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.71 : 16,031.58 = 3,291.77 : x
2. Step 2: Convert to fraction form
   10,686.71/16,031.58 = 3,291.77/x
3. Step 3: Cross multiply
   10,686.71x = 16,031.58 × 3,291.77
4. Step 4: Simplify right side
   10,686.71x = 52,772,274.10
5. Step 5: Solve for x
   x = 52,772,274.10/10,686.71
6. Step 6: Final answer
   x = 4,938.12