Finding the Fourth Proportional to 37,816.90, 52,182.79 and 21,899.18

Step by Step Solution

1. Step 1: Write the proportion equation
   37,816.90 : 52,182.79 = 21,899.18 : x
2. Step 2: Convert to fraction form
   37,816.90/52,182.79 = 21,899.18/x
3. Step 3: Cross multiply
   37,816.90x = 52,182.79 × 21,899.18
4. Step 4: Simplify right side
   37,816.90x = 1,142,760,386.82
5. Step 5: Solve for x
   x = 1,142,760,386.82/37,816.90
6. Step 6: Final answer
   x = 30,218.25