Finding the Fourth Proportional to 12,427.37, 17,150.24 and 7,123.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427.37 : 17,150.24 = 7,123.20 : x
2. Step 2: Convert to fraction form
   12,427.37/17,150.24 = 7,123.20/x
3. Step 3: Cross multiply
   12,427.37x = 17,150.24 × 7,123.20
4. Step 4: Simplify right side
   12,427.37x = 122,164,553.95
5. Step 5: Solve for x
   x = 122,164,553.95/12,427.37
6. Step 6: Final answer
   x = 9,830.29