Finding the Fourth Proportional to 38,100.26, 52,578.57 and 21,105.05

Step by Step Solution

1. Step 1: Write the proportion equation
   38,100.26 : 52,578.57 = 21,105.05 : x
2. Step 2: Convert to fraction form
   38,100.26/52,578.57 = 21,105.05/x
3. Step 3: Cross multiply
   38,100.26x = 52,578.57 × 21,105.05
4. Step 4: Simplify right side
   38,100.26x = 1,109,673,085.89
5. Step 5: Solve for x
   x = 1,109,673,085.89/38,100.26
6. Step 6: Final answer
   x = 29,125.08