Finding the Fourth Proportional to 21,833.31, 30,117.61 and 13,753.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,833.31 : 30,117.61 = 13,753.05 : x
2. Step 2: Convert to fraction form
   21,833.31/30,117.61 = 13,753.05/x
3. Step 3: Cross multiply
   21,833.31x = 30,117.61 × 13,753.05
4. Step 4: Simplify right side
   21,833.31x = 414,209,013.40
5. Step 5: Solve for x
   x = 414,209,013.40/21,833.31
6. Step 6: Final answer
   x = 18,971.43