Finding the Fourth Proportional to 9,890.42, 13,649.16 and 5,414.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.42 : 13,649.16 = 5,414.56 : x
2. Step 2: Convert to fraction form
   9,890.42/13,649.16 = 5,414.56/x
3. Step 3: Cross multiply
   9,890.42x = 13,649.16 × 5,414.56
4. Step 4: Simplify right side
   9,890.42x = 73,904,195.77
5. Step 5: Solve for x
   x = 73,904,195.77/9,890.42
6. Step 6: Final answer
   x = 7,472.30