Finding the Fourth Proportional to 7,038.72, 9,714.40 and 4,245.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,038.72 : 9,714.40 = 4,245.12 : x
2. Step 2: Convert to fraction form
   7,038.72/9,714.40 = 4,245.12/x
3. Step 3: Cross multiply
   7,038.72x = 9,714.40 × 4,245.12
4. Step 4: Simplify right side
   7,038.72x = 41,238,793.73
5. Step 5: Solve for x
   x = 41,238,793.73/7,038.72
6. Step 6: Final answer
   x = 5,858.85