Finding the Fourth Proportional to 13,233.56, 18,260.79 and 7,854.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,233.56 : 18,260.79 = 7,854.07 : x
2. Step 2: Convert to fraction form
   13,233.56/18,260.79 = 7,854.07/x
3. Step 3: Cross multiply
   13,233.56x = 18,260.79 × 7,854.07
4. Step 4: Simplify right side
   13,233.56x = 143,421,522.92
5. Step 5: Solve for x
   x = 143,421,522.92/13,233.56
6. Step 6: Final answer
   x = 10,837.71