Finding the Fourth Proportional to 9,621.56, 13,277.76 and 5,429.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621.56 : 13,277.76 = 5,429.82 : x
2. Step 2: Convert to fraction form
   9,621.56/13,277.76 = 5,429.82/x
3. Step 3: Cross multiply
   9,621.56x = 13,277.76 × 5,429.82
4. Step 4: Simplify right side
   9,621.56x = 72,095,846.80
5. Step 5: Solve for x
   x = 72,095,846.80/9,621.56
6. Step 6: Final answer
   x = 7,493.16