Finding the Fourth Proportional to 9,780.15, 13,496.36 and 5,588.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.15 : 13,496.36 = 5,588.13 : x
2. Step 2: Convert to fraction form
   9,780.15/13,496.36 = 5,588.13/x
3. Step 3: Cross multiply
   9,780.15x = 13,496.36 × 5,588.13
4. Step 4: Simplify right side
   9,780.15x = 75,419,360.70
5. Step 5: Solve for x
   x = 75,419,360.70/9,780.15
6. Step 6: Final answer
   x = 7,711.48