Finding the Fourth Proportional to 7,477.98, 10,244.87 and 7,197.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,477.98 : 10,244.87 = 7,197.72 : x
2. Step 2: Convert to fraction form
   7,477.98/10,244.87 = 7,197.72/x
3. Step 3: Cross multiply
   7,477.98x = 10,244.87 × 7,197.72
4. Step 4: Simplify right side
   7,477.98x = 73,739,705.70
5. Step 5: Solve for x
   x = 73,739,705.70/7,477.98
6. Step 6: Final answer
   x = 9,860.91