Finding the Fourth Proportional to 37,808.72, 52,181.28 and 21,898.16

Step by Step Solution

1. Step 1: Write the proportion equation
   37,808.72 : 52,181.28 = 21,898.16 : x
2. Step 2: Convert to fraction form
   37,808.72/52,181.28 = 21,898.16/x
3. Step 3: Cross multiply
   37,808.72x = 52,181.28 × 21,898.16
4. Step 4: Simplify right side
   37,808.72x = 1,142,674,018.44
5. Step 5: Solve for x
   x = 1,142,674,018.44/37,808.72
6. Step 6: Final answer
   x = 30,222.50