Finding the Fourth Proportional to 13,325.34, 18,389.58 and 7,661.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,325.34 : 18,389.58 = 7,661.93 : x
2. Step 2: Convert to fraction form
   13,325.34/18,389.58 = 7,661.93/x
3. Step 3: Cross multiply
   13,325.34x = 18,389.58 × 7,661.93
4. Step 4: Simplify right side
   13,325.34x = 140,899,674.69
5. Step 5: Solve for x
   x = 140,899,674.69/13,325.34
6. Step 6: Final answer
   x = 10,573.81