Finding the Fourth Proportional to 12,471, 17,212.20 and 7,435.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,471 : 17,212.20 = 7,435.56 : x
2. Step 2: Convert to fraction form
   12,471/17,212.20 = 7,435.56/x
3. Step 3: Cross multiply
   12,471x = 17,212.20 × 7,435.56
4. Step 4: Simplify right side
   12,471x = 127,982,345.83
5. Step 5: Solve for x
   x = 127,982,345.83/12,471
6. Step 6: Final answer
   x = 10,262.40