Finding the Fourth Proportional to 9,985.50, 13,779.99 and 5,796.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.50 : 13,779.99 = 5,796.18 : x
2. Step 2: Convert to fraction form
   9,985.50/13,779.99 = 5,796.18/x
3. Step 3: Cross multiply
   9,985.50x = 13,779.99 × 5,796.18
4. Step 4: Simplify right side
   9,985.50x = 79,871,302.44
5. Step 5: Solve for x
   x = 79,871,302.44/9,985.50
6. Step 6: Final answer
   x = 7,998.73