Finding the Fourth Proportional to 10,430.21, 14,393.61 and 5,714.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430.21 : 14,393.61 = 5,714.39 : x
2. Step 2: Convert to fraction form
   10,430.21/14,393.61 = 5,714.39/x
3. Step 3: Cross multiply
   10,430.21x = 14,393.61 × 5,714.39
4. Step 4: Simplify right side
   10,430.21x = 82,250,629.08
5. Step 5: Solve for x
   x = 82,250,629.08/10,430.21
6. Step 6: Final answer
   x = 7,885.81