Finding the Fourth Proportional to 9,984.50, 13,779.31 and 5,736.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.50 : 13,779.31 = 5,736.25 : x
2. Step 2: Convert to fraction form
   9,984.50/13,779.31 = 5,736.25/x
3. Step 3: Cross multiply
   9,984.50x = 13,779.31 × 5,736.25
4. Step 4: Simplify right side
   9,984.50x = 79,041,566.99
5. Step 5: Solve for x
   x = 79,041,566.99/9,984.50
6. Step 6: Final answer
   x = 7,916.43