Finding the Fourth Proportional to 9,800.99, 13,522.10 and 5,551.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,800.99 : 13,522.10 = 5,551.61 : x
2. Step 2: Convert to fraction form
   9,800.99/13,522.10 = 5,551.61/x
3. Step 3: Cross multiply
   9,800.99x = 13,522.10 × 5,551.61
4. Step 4: Simplify right side
   9,800.99x = 75,069,431.63
5. Step 5: Solve for x
   x = 75,069,431.63/9,800.99
6. Step 6: Final answer
   x = 7,659.38