Finding the Fourth Proportional to 10,553.78, 14,549.01 and 7,400.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,553.78 : 14,549.01 = 7,400.18 : x
2. Step 2: Convert to fraction form
   10,553.78/14,549.01 = 7,400.18/x
3. Step 3: Cross multiply
   10,553.78x = 14,549.01 × 7,400.18
4. Step 4: Simplify right side
   10,553.78x = 107,665,292.82
5. Step 5: Solve for x
   x = 107,665,292.82/10,553.78
6. Step 6: Final answer
   x = 10,201.59