Finding the Fourth Proportional to 13,572.38, 18,729.42 and 7,604.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,572.38 : 18,729.42 = 7,604.30 : x
2. Step 2: Convert to fraction form
   13,572.38/18,729.42 = 7,604.30/x
3. Step 3: Cross multiply
   13,572.38x = 18,729.42 × 7,604.30
4. Step 4: Simplify right side
   13,572.38x = 142,424,128.51
5. Step 5: Solve for x
   x = 142,424,128.51/13,572.38
6. Step 6: Final answer
   x = 10,493.67