Finding the Fourth Proportional to 10,427.19, 14,389.73 and 5,711.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427.19 : 14,389.73 = 5,711.48 : x
2. Step 2: Convert to fraction form
   10,427.19/14,389.73 = 5,711.48/x
3. Step 3: Cross multiply
   10,427.19x = 14,389.73 × 5,711.48
4. Step 4: Simplify right side
   10,427.19x = 82,186,597.43
5. Step 5: Solve for x
   x = 82,186,597.43/10,427.19
6. Step 6: Final answer
   x = 7,881.95