Finding the Fourth Proportional to 9,817.72, 14,720.10 and 8,366.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,817.72 : 14,720.10 = 8,366.20 : x
2. Step 2: Convert to fraction form
   9,817.72/14,720.10 = 8,366.20/x
3. Step 3: Cross multiply
   9,817.72x = 14,720.10 × 8,366.20
4. Step 4: Simplify right side
   9,817.72x = 123,151,300.62
5. Step 5: Solve for x
   x = 123,151,300.62/9,817.72
6. Step 6: Final answer
   x = 12,543.78