Finding the Fourth Proportional to 13,476.38, 18,597.59 and 7,811.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,476.38 : 18,597.59 = 7,811.54 : x
2. Step 2: Convert to fraction form
   13,476.38/18,597.59 = 7,811.54/x
3. Step 3: Cross multiply
   13,476.38x = 18,597.59 × 7,811.54
4. Step 4: Simplify right side
   13,476.38x = 145,275,785.18
5. Step 5: Solve for x
   x = 145,275,785.18/13,476.38
6. Step 6: Final answer
   x = 10,780.03