Finding the Fourth Proportional to 21,085.82, 29,079.58 and 17,495.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085.82 : 29,079.58 = 17,495.09 : x
2. Step 2: Convert to fraction form
   21,085.82/29,079.58 = 17,495.09/x
3. Step 3: Cross multiply
   21,085.82x = 29,079.58 × 17,495.09
4. Step 4: Simplify right side
   21,085.82x = 508,749,828.79
5. Step 5: Solve for x
   x = 508,749,828.79/21,085.82
6. Step 6: Final answer
   x = 24,127.59