Finding the Fourth Proportional to 10,945.02, 16,398.90 and 7,427.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,945.02 : 16,398.90 = 7,427.46 : x
2. Step 2: Convert to fraction form
   10,945.02/16,398.90 = 7,427.46/x
3. Step 3: Cross multiply
   10,945.02x = 16,398.90 × 7,427.46
4. Step 4: Simplify right side
   10,945.02x = 121,802,173.79
5. Step 5: Solve for x
   x = 121,802,173.79/10,945.02
6. Step 6: Final answer
   x = 11,128.55