Finding the Fourth Proportional to 9,776.17, 13,491.12 and 5,299.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,776.17 : 13,491.12 = 5,299.91 : x
2. Step 2: Convert to fraction form
   9,776.17/13,491.12 = 5,299.91/x
3. Step 3: Cross multiply
   9,776.17x = 13,491.12 × 5,299.91
4. Step 4: Simplify right side
   9,776.17x = 71,501,721.80
5. Step 5: Solve for x
   x = 71,501,721.80/9,776.17
6. Step 6: Final answer
   x = 7,313.88