Finding the Fourth Proportional to 9,984.96, 13,778.16 and 5,736.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.96 : 13,778.16 = 5,736.48 : x
2. Step 2: Convert to fraction form
   9,984.96/13,778.16 = 5,736.48/x
3. Step 3: Cross multiply
   9,984.96x = 13,778.16 × 5,736.48
4. Step 4: Simplify right side
   9,984.96x = 79,038,139.28
5. Step 5: Solve for x
   x = 79,038,139.28/9,984.96
6. Step 6: Final answer
   x = 7,915.72