Finding the Fourth Proportional to 10,427.84, 14,389.68 and 5,712.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427.84 : 14,389.68 = 5,712.08 : x
2. Step 2: Convert to fraction form
   10,427.84/14,389.68 = 5,712.08/x
3. Step 3: Cross multiply
   10,427.84x = 14,389.68 × 5,712.08
4. Step 4: Simplify right side
   10,427.84x = 82,195,003.33
5. Step 5: Solve for x
   x = 82,195,003.33/10,427.84
6. Step 6: Final answer
   x = 7,882.27