Finding the Fourth Proportional to 10,381.44, 14,326.48 and 5,665.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,381.44 : 14,326.48 = 5,665.72 : x
2. Step 2: Convert to fraction form
   10,381.44/14,326.48 = 5,665.72/x
3. Step 3: Cross multiply
   10,381.44x = 14,326.48 × 5,665.72
4. Step 4: Simplify right side
   10,381.44x = 81,169,795.53
5. Step 5: Solve for x
   x = 81,169,795.53/10,381.44
6. Step 6: Final answer
   x = 7,818.74