Finding the Fourth Proportional to 13,321.89, 18,386.01 and 7,732.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,321.89 : 18,386.01 = 7,732.89 : x
2. Step 2: Convert to fraction form
   13,321.89/18,386.01 = 7,732.89/x
3. Step 3: Cross multiply
   13,321.89x = 18,386.01 × 7,732.89
4. Step 4: Simplify right side
   13,321.89x = 142,176,992.87
5. Step 5: Solve for x
   x = 142,176,992.87/13,321.89
6. Step 6: Final answer
   x = 10,672.43