Finding the Fourth Proportional to 22,491.02, 30,812.55 and 21,649.93

Step by Step Solution

1. Step 1: Write the proportion equation
   22,491.02 : 30,812.55 = 21,649.93 : x
2. Step 2: Convert to fraction form
   22,491.02/30,812.55 = 21,649.93/x
3. Step 3: Cross multiply
   22,491.02x = 30,812.55 × 21,649.93
4. Step 4: Simplify right side
   22,491.02x = 667,089,687.50
5. Step 5: Solve for x
   x = 667,089,687.50/22,491.02
6. Step 6: Final answer
   x = 29,660.27