Finding the Fourth Proportional to 10,434.94, 14,400.21 and 5,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.94 : 14,400.21 = 5,719.12 : x
2. Step 2: Convert to fraction form
   10,434.94/14,400.21 = 5,719.12/x
3. Step 3: Cross multiply
   10,434.94x = 14,400.21 × 5,719.12
4. Step 4: Simplify right side
   10,434.94x = 82,356,514.46
5. Step 5: Solve for x
   x = 82,356,514.46/10,434.94
6. Step 6: Final answer
   x = 7,892.38