Finding the Fourth Proportional to 9,780.74, 13,496.38 and 5,747.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.74 : 13,496.38 = 5,747.55 : x
2. Step 2: Convert to fraction form
   9,780.74/13,496.38 = 5,747.55/x
3. Step 3: Cross multiply
   9,780.74x = 13,496.38 × 5,747.55
4. Step 4: Simplify right side
   9,780.74x = 77,571,118.87
5. Step 5: Solve for x
   x = 77,571,118.87/9,780.74
6. Step 6: Final answer
   x = 7,931.01