Finding the Fourth Proportional to 12,427.82, 17,150.80 and 7,123.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427.82 : 17,150.80 = 7,123.65 : x
2. Step 2: Convert to fraction form
   12,427.82/17,150.80 = 7,123.65/x
3. Step 3: Cross multiply
   12,427.82x = 17,150.80 × 7,123.65
4. Step 4: Simplify right side
   12,427.82x = 122,176,296.42
5. Step 5: Solve for x
   x = 122,176,296.42/12,427.82
6. Step 6: Final answer
   x = 9,830.87