Finding the Fourth Proportional to 8,332.42, 12,487.78 and 3,396.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,332.42 : 12,487.78 = 3,396.28 : x
2. Step 2: Convert to fraction form
   8,332.42/12,487.78 = 3,396.28/x
3. Step 3: Cross multiply
   8,332.42x = 12,487.78 × 3,396.28
4. Step 4: Simplify right side
   8,332.42x = 42,411,997.46
5. Step 5: Solve for x
   x = 42,411,997.46/8,332.42
6. Step 6: Final answer
   x = 5,090.00