Finding the Fourth Proportional to 13,325.32, 18,389.52 and 7,661.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,325.32 : 18,389.52 = 7,661.89 : x
2. Step 2: Convert to fraction form
   13,325.32/18,389.52 = 7,661.89/x
3. Step 3: Cross multiply
   13,325.32x = 18,389.52 × 7,661.89
4. Step 4: Simplify right side
   13,325.32x = 140,898,479.39
5. Step 5: Solve for x
   x = 140,898,479.39/13,325.32
6. Step 6: Final answer
   x = 10,573.74