Finding the Fourth Proportional to 37,815.93, 52,185.06 and 21,899.43

Step by Step Solution

1. Step 1: Write the proportion equation
   37,815.93 : 52,185.06 = 21,899.43 : x
2. Step 2: Convert to fraction form
   37,815.93/52,185.06 = 21,899.43/x
3. Step 3: Cross multiply
   37,815.93x = 52,185.06 × 21,899.43
4. Step 4: Simplify right side
   37,815.93x = 1,142,823,068.52
5. Step 5: Solve for x
   x = 1,142,823,068.52/37,815.93
6. Step 6: Final answer
   x = 30,220.68