Finding the Fourth Proportional to 21,043.49, 29,050.53 and 13,088.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,043.49 : 29,050.53 = 13,088.27 : x
2. Step 2: Convert to fraction form
   21,043.49/29,050.53 = 13,088.27/x
3. Step 3: Cross multiply
   21,043.49x = 29,050.53 × 13,088.27
4. Step 4: Simplify right side
   21,043.49x = 380,221,203.83
5. Step 5: Solve for x
   x = 380,221,203.83/21,043.49
6. Step 6: Final answer
   x = 18,068.36