Finding the Fourth Proportional to 7,192.72, 9,928.74 and 5,621.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,192.72 : 9,928.74 = 5,621.32 : x
2. Step 2: Convert to fraction form
   7,192.72/9,928.74 = 5,621.32/x
3. Step 3: Cross multiply
   7,192.72x = 9,928.74 × 5,621.32
4. Step 4: Simplify right side
   7,192.72x = 55,812,624.74
5. Step 5: Solve for x
   x = 55,812,624.74/7,192.72
6. Step 6: Final answer
   x = 7,759.60