Finding the Fourth Proportional to 10,775.56, 14,853.33 and 9,871.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,775.56 : 14,853.33 = 9,871.60 : x
2. Step 2: Convert to fraction form
   10,775.56/14,853.33 = 9,871.60/x
3. Step 3: Cross multiply
   10,775.56x = 14,853.33 × 9,871.60
4. Step 4: Simplify right side
   10,775.56x = 146,626,132.43
5. Step 5: Solve for x
   x = 146,626,132.43/10,775.56
6. Step 6: Final answer
   x = 13,607.29