Finding the Fourth Proportional to 7,642.58, 10,546.72 and 4,285.39

Step by Step Solution

1. Step 1: Write the proportion equation
   7,642.58 : 10,546.72 = 4,285.39 : x
2. Step 2: Convert to fraction form
   7,642.58/10,546.72 = 4,285.39/x
3. Step 3: Cross multiply
   7,642.58x = 10,546.72 × 4,285.39
4. Step 4: Simplify right side
   7,642.58x = 45,196,808.42
5. Step 5: Solve for x
   x = 45,196,808.42/7,642.58
6. Step 6: Final answer
   x = 5,913.82