Finding the Fourth Proportional to 17,769.61, 26,649.76 and 5,286.27

Step by Step Solution

1. Step 1: Write the proportion equation
   17,769.61 : 26,649.76 = 5,286.27 : x
2. Step 2: Convert to fraction form
   17,769.61/26,649.76 = 5,286.27/x
3. Step 3: Cross multiply
   17,769.61x = 26,649.76 × 5,286.27
4. Step 4: Simplify right side
   17,769.61x = 140,877,826.80
5. Step 5: Solve for x
   x = 140,877,826.80/17,769.61
6. Step 6: Final answer
   x = 7,928.02