Finding the Fourth Proportional to 15,610, 21,541.89 and 10,021

Step by Step Solution

1. Step 1: Write the proportion equation
   15,610 : 21,541.89 = 10,021 : x
2. Step 2: Convert to fraction form
   15,610/21,541.89 = 10,021/x
3. Step 3: Cross multiply
   15,610x = 21,541.89 × 10,021
4. Step 4: Simplify right side
   15,610x = 215,871,279.69
5. Step 5: Solve for x
   x = 215,871,279.69/15,610
6. Step 6: Final answer
   x = 13,829.04