Finding the Fourth Proportional to 21,036, 31,550.64 and 7,002.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,036 : 31,550.64 = 7,002.24 : x
2. Step 2: Convert to fraction form
   21,036/31,550.64 = 7,002.24/x
3. Step 3: Cross multiply
   21,036x = 31,550.64 × 7,002.24
4. Step 4: Simplify right side
   21,036x = 220,925,153.43
5. Step 5: Solve for x
   x = 220,925,153.43/21,036
6. Step 6: Final answer
   x = 10,502.24