Finding the Fourth Proportional to 9,986.09, 13,779.32 and 5,510.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.09 : 13,779.32 = 5,510.03 : x
2. Step 2: Convert to fraction form
   9,986.09/13,779.32 = 5,510.03/x
3. Step 3: Cross multiply
   9,986.09x = 13,779.32 × 5,510.03
4. Step 4: Simplify right side
   9,986.09x = 75,924,370.13
5. Step 5: Solve for x
   x = 75,924,370.13/9,986.09
6. Step 6: Final answer
   x = 7,603.02