Finding the Fourth Proportional to 52,410.62, 72,328.20 and 28,538.30

Step by Step Solution

1. Step 1: Write the proportion equation
   52,410.62 : 72,328.20 = 28,538.30 : x
2. Step 2: Convert to fraction form
   52,410.62/72,328.20 = 28,538.30/x
3. Step 3: Cross multiply
   52,410.62x = 72,328.20 × 28,538.30
4. Step 4: Simplify right side
   52,410.62x = 2,064,123,870.06
5. Step 5: Solve for x
   x = 2,064,123,870.06/52,410.62
6. Step 6: Final answer
   x = 39,383.69