Finding the Fourth Proportional to 13,572.72, 18,731.56 and 7,604.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,572.72 : 18,731.56 = 7,604.35 : x
2. Step 2: Convert to fraction form
   13,572.72/18,731.56 = 7,604.35/x
3. Step 3: Cross multiply
   13,572.72x = 18,731.56 × 7,604.35
4. Step 4: Simplify right side
   13,572.72x = 142,441,338.29
5. Step 5: Solve for x
   x = 142,441,338.29/13,572.72
6. Step 6: Final answer
   x = 10,494.68