Finding the Fourth Proportional to 6,619.72, 9,141.78 and 5,303.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,619.72 : 9,141.78 = 5,303.56 : x
2. Step 2: Convert to fraction form
   6,619.72/9,141.78 = 5,303.56/x
3. Step 3: Cross multiply
   6,619.72x = 9,141.78 × 5,303.56
4. Step 4: Simplify right side
   6,619.72x = 48,483,978.74
5. Step 5: Solve for x
   x = 48,483,978.74/6,619.72
6. Step 6: Final answer
   x = 7,324.17