Finding the Fourth Proportional to 13,472.04, 18,590.69 and 7,422.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,472.04 : 18,590.69 = 7,422.09 : x
2. Step 2: Convert to fraction form
   13,472.04/18,590.69 = 7,422.09/x
3. Step 3: Cross multiply
   13,472.04x = 18,590.69 × 7,422.09
4. Step 4: Simplify right side
   13,472.04x = 137,981,667.52
5. Step 5: Solve for x
   x = 137,981,667.52/13,472.04
6. Step 6: Final answer
   x = 10,242.07