Finding the Fourth Proportional to 9,555.15, 13,186.82 and 5,778.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,555.15 : 13,186.82 = 5,778.46 : x
2. Step 2: Convert to fraction form
   9,555.15/13,186.82 = 5,778.46/x
3. Step 3: Cross multiply
   9,555.15x = 13,186.82 × 5,778.46
4. Step 4: Simplify right side
   9,555.15x = 76,199,483.00
5. Step 5: Solve for x
   x = 76,199,483.00/9,555.15
6. Step 6: Final answer
   x = 7,974.70