Finding the Fourth Proportional to 9,984.60, 13,778.82 and 5,508.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,984.60 : 13,778.82 = 5,508.51 : x
2. Step 2: Convert to fraction form
   9,984.60/13,778.82 = 5,508.51/x
3. Step 3: Cross multiply
   9,984.60x = 13,778.82 × 5,508.51
4. Step 4: Simplify right side
   9,984.60x = 75,900,767.76
5. Step 5: Solve for x
   x = 75,900,767.76/9,984.60
6. Step 6: Final answer
   x = 7,601.78