Finding the Fourth Proportional to 9,967.56, 13,755.12 and 5,775.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.56 : 13,755.12 = 5,775.72 : x
2. Step 2: Convert to fraction form
   9,967.56/13,755.12 = 5,775.72/x
3. Step 3: Cross multiply
   9,967.56x = 13,755.12 × 5,775.72
4. Step 4: Simplify right side
   9,967.56x = 79,445,721.69
5. Step 5: Solve for x
   x = 79,445,721.69/9,967.56
6. Step 6: Final answer
   x = 7,970.43