Finding the Fourth Proportional to 37,815, 52,184.76 and 21,900.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,815 : 52,184.76 = 21,900.30 : x
2. Step 2: Convert to fraction form
   37,815/52,184.76 = 21,900.30/x
3. Step 3: Cross multiply
   37,815x = 52,184.76 × 21,900.30
4. Step 4: Simplify right side
   37,815x = 1,142,861,899.43
5. Step 5: Solve for x
   x = 1,142,861,899.43/37,815
6. Step 6: Final answer
   x = 30,222.45