Finding the Fourth Proportional to 21,635.51, 29,857.28 and 12,563.00

Step by Step Solution

1. Step 1: Write the proportion equation
   21,635.51 : 29,857.28 = 12,563.00 : x
2. Step 2: Convert to fraction form
   21,635.51/29,857.28 = 12,563.00/x
3. Step 3: Cross multiply
   21,635.51x = 29,857.28 × 12,563.00
4. Step 4: Simplify right side
   21,635.51x = 375,096,796.54
5. Step 5: Solve for x
   x = 375,096,796.54/21,635.51
6. Step 6: Final answer
   x = 17,337.09