Finding the Fourth Proportional to 9,920.42, 14,881.50 and 3,680.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920.42 : 14,881.50 = 3,680.49 : x
2. Step 2: Convert to fraction form
   9,920.42/14,881.50 = 3,680.49/x
3. Step 3: Cross multiply
   9,920.42x = 14,881.50 × 3,680.49
4. Step 4: Simplify right side
   9,920.42x = 54,771,253.94
5. Step 5: Solve for x
   x = 54,771,253.94/9,920.42
6. Step 6: Final answer
   x = 5,521.06