Finding the Fourth Proportional to 37,905.86, 52,305.90 and 21,987.23

Step by Step Solution

1. Step 1: Write the proportion equation
   37,905.86 : 52,305.90 = 21,987.23 : x
2. Step 2: Convert to fraction form
   37,905.86/52,305.90 = 21,987.23/x
3. Step 3: Cross multiply
   37,905.86x = 52,305.90 × 21,987.23
4. Step 4: Simplify right side
   37,905.86x = 1,150,061,927.57
5. Step 5: Solve for x
   x = 1,150,061,927.57/37,905.86
6. Step 6: Final answer
   x = 30,339.95