Finding the Fourth Proportional to 10,381.76, 14,254.47 and 10,111.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,381.76 : 14,254.47 = 10,111.16 : x
2. Step 2: Convert to fraction form
   10,381.76/14,254.47 = 10,111.16/x
3. Step 3: Cross multiply
   10,381.76x = 14,254.47 × 10,111.16
4. Step 4: Simplify right side
   10,381.76x = 144,129,226.89
5. Step 5: Solve for x
   x = 144,129,226.89/10,381.76
6. Step 6: Final answer
   x = 13,882.93