Finding the Fourth Proportional to 7,003.72, 10,491.56 and 4,221.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.72 : 10,491.56 = 4,221.98 : x
2. Step 2: Convert to fraction form
   7,003.72/10,491.56 = 4,221.98/x
3. Step 3: Cross multiply
   7,003.72x = 10,491.56 × 4,221.98
4. Step 4: Simplify right side
   7,003.72x = 44,295,156.49
5. Step 5: Solve for x
   x = 44,295,156.49/7,003.72
6. Step 6: Final answer
   x = 6,324.52