Finding the Fourth Proportional to 37,894.64, 52,294.72 and 21,128.24

Step by Step Solution

1. Step 1: Write the proportion equation
   37,894.64 : 52,294.72 = 21,128.24 : x
2. Step 2: Convert to fraction form
   37,894.64/52,294.72 = 21,128.24/x
3. Step 3: Cross multiply
   37,894.64x = 52,294.72 × 21,128.24
4. Step 4: Simplify right side
   37,894.64x = 1,104,895,394.89
5. Step 5: Solve for x
   x = 1,104,895,394.89/37,894.64
6. Step 6: Final answer
   x = 29,157.04