Finding the Fourth Proportional to 38,714.78, 58,088.57 and 21,164.10

Step by Step Solution

1. Step 1: Write the proportion equation
   38,714.78 : 58,088.57 = 21,164.10 : x
2. Step 2: Convert to fraction form
   38,714.78/58,088.57 = 21,164.10/x
3. Step 3: Cross multiply
   38,714.78x = 58,088.57 × 21,164.10
4. Step 4: Simplify right side
   38,714.78x = 1,229,392,198.52
5. Step 5: Solve for x
   x = 1,229,392,198.52/38,714.78
6. Step 6: Final answer
   x = 31,755.12