Finding the Fourth Proportional to 21,300.56, 31,950.52 and 7,449.68

Step by Step Solution

1. Step 1: Write the proportion equation
   21,300.56 : 31,950.52 = 7,449.68 : x
2. Step 2: Convert to fraction form
   21,300.56/31,950.52 = 7,449.68/x
3. Step 3: Cross multiply
   21,300.56x = 31,950.52 × 7,449.68
4. Step 4: Simplify right side
   21,300.56x = 238,021,149.83
5. Step 5: Solve for x
   x = 238,021,149.83/21,300.56
6. Step 6: Final answer
   x = 11,174.41