Finding the Fourth Proportional to 8,320.42, 12,444.16 and 7,241.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.42 : 12,444.16 = 7,241.50 : x
2. Step 2: Convert to fraction form
   8,320.42/12,444.16 = 7,241.50/x
3. Step 3: Cross multiply
   8,320.42x = 12,444.16 × 7,241.50
4. Step 4: Simplify right side
   8,320.42x = 90,114,384.64
5. Step 5: Solve for x
   x = 90,114,384.64/8,320.42
6. Step 6: Final answer
   x = 10,830.51