Finding the Fourth Proportional to 9,299.08, 12,830.82 and 5,521.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,299.08 : 12,830.82 = 5,521.72 : x
2. Step 2: Convert to fraction form
   9,299.08/12,830.82 = 5,521.72/x
3. Step 3: Cross multiply
   9,299.08x = 12,830.82 × 5,521.72
4. Step 4: Simplify right side
   9,299.08x = 70,848,195.41
5. Step 5: Solve for x
   x = 70,848,195.41/9,299.08
6. Step 6: Final answer
   x = 7,618.84