Finding the Fourth Proportional to 9,789.55, 14,686.71 and 3,126.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.55 : 14,686.71 = 3,126.05 : x
2. Step 2: Convert to fraction form
   9,789.55/14,686.71 = 3,126.05/x
3. Step 3: Cross multiply
   9,789.55x = 14,686.71 × 3,126.05
4. Step 4: Simplify right side
   9,789.55x = 45,911,426.51
5. Step 5: Solve for x
   x = 45,911,426.51/9,789.55
6. Step 6: Final answer
   x = 4,689.84