Finding the Fourth Proportional to 10,114.56, 14,012.28 and 9,872.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,114.56 : 14,012.28 = 9,872.64 : x
2. Step 2: Convert to fraction form
   10,114.56/14,012.28 = 9,872.64/x
3. Step 3: Cross multiply
   10,114.56x = 14,012.28 × 9,872.64
4. Step 4: Simplify right side
   10,114.56x = 138,338,196.02
5. Step 5: Solve for x
   x = 138,338,196.02/10,114.56
6. Step 6: Final answer
   x = 13,677.13