Finding the Fourth Proportional to 10,077.10, 15,086.85 and 9,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,077.10 : 15,086.85 = 9,789.10 : x
2. Step 2: Convert to fraction form
   10,077.10/15,086.85 = 9,789.10/x
3. Step 3: Cross multiply
   10,077.10x = 15,086.85 × 9,789.10
4. Step 4: Simplify right side
   10,077.10x = 147,686,683.34
5. Step 5: Solve for x
   x = 147,686,683.34/10,077.10
6. Step 6: Final answer
   x = 14,655.67