Finding the Fourth Proportional to 8,821.89, 12,174.39 and 5,045.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,821.89 : 12,174.39 = 5,045.40 : x
2. Step 2: Convert to fraction form
   8,821.89/12,174.39 = 5,045.40/x
3. Step 3: Cross multiply
   8,821.89x = 12,174.39 × 5,045.40
4. Step 4: Simplify right side
   8,821.89x = 61,424,667.31
5. Step 5: Solve for x
   x = 61,424,667.31/8,821.89
6. Step 6: Final answer
   x = 6,962.76