Finding the Fourth Proportional to 12,238.47, 16,889.06 and 7,458.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238.47 : 16,889.06 = 7,458.43 : x
2. Step 2: Convert to fraction form
   12,238.47/16,889.06 = 7,458.43/x
3. Step 3: Cross multiply
   12,238.47x = 16,889.06 × 7,458.43
4. Step 4: Simplify right side
   12,238.47x = 125,965,848.20
5. Step 5: Solve for x
   x = 125,965,848.20/12,238.47
6. Step 6: Final answer
   x = 10,292.61