Finding the Fourth Proportional to 10,428.89, 14,392.20 and 5,713.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,428.89 : 14,392.20 = 5,713.46 : x
2. Step 2: Convert to fraction form
   10,428.89/14,392.20 = 5,713.46/x
3. Step 3: Cross multiply
   10,428.89x = 14,392.20 × 5,713.46
4. Step 4: Simplify right side
   10,428.89x = 82,229,259.01
5. Step 5: Solve for x
   x = 82,229,259.01/10,428.89
6. Step 6: Final answer
   x = 7,884.76