Finding the Fourth Proportional to 9,984.37, 13,779.06 and 5,736.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.37 : 13,779.06 = 5,736.79 : x
2. Step 2: Convert to fraction form
   9,984.37/13,779.06 = 5,736.79/x
3. Step 3: Cross multiply
   9,984.37x = 13,779.06 × 5,736.79
4. Step 4: Simplify right side
   9,984.37x = 79,047,573.62
5. Step 5: Solve for x
   x = 79,047,573.62/9,984.37
6. Step 6: Final answer
   x = 7,917.13