Finding the Fourth Proportional to 8,972.89, 12,382.99 and 5,196.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,972.89 : 12,382.99 = 5,196.22 : x
2. Step 2: Convert to fraction form
   8,972.89/12,382.99 = 5,196.22/x
3. Step 3: Cross multiply
   8,972.89x = 12,382.99 × 5,196.22
4. Step 4: Simplify right side
   8,972.89x = 64,344,652.40
5. Step 5: Solve for x
   x = 64,344,652.40/8,972.89
6. Step 6: Final answer
   x = 7,171.01