Finding the Fourth Proportional to 13,233.93, 18,261.47 and 7,928.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,233.93 : 18,261.47 = 7,928.61 : x
2. Step 2: Convert to fraction form
   13,233.93/18,261.47 = 7,928.61/x
3. Step 3: Cross multiply
   13,233.93x = 18,261.47 × 7,928.61
4. Step 4: Simplify right side
   13,233.93x = 144,788,034.01
5. Step 5: Solve for x
   x = 144,788,034.01/13,233.93
6. Step 6: Final answer
   x = 10,940.67