Finding the Fourth Proportional to 9,984.56, 13,778.84 and 5,508.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.56 : 13,778.84 = 5,508.30 : x
2. Step 2: Convert to fraction form
   9,984.56/13,778.84 = 5,508.30/x
3. Step 3: Cross multiply
   9,984.56x = 13,778.84 × 5,508.30
4. Step 4: Simplify right side
   9,984.56x = 75,897,984.37
5. Step 5: Solve for x
   x = 75,897,984.37/9,984.56
6. Step 6: Final answer
   x = 7,601.54