Finding the Fourth Proportional to 52,836.30, 72,913.50 and 28,962.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,836.30 : 72,913.50 = 28,962.90 : x
2. Step 2: Convert to fraction form
   52,836.30/72,913.50 = 28,962.90/x
3. Step 3: Cross multiply
   52,836.30x = 72,913.50 × 28,962.90
4. Step 4: Simplify right side
   52,836.30x = 2,111,786,409.15
5. Step 5: Solve for x
   x = 2,111,786,409.15/52,836.30
6. Step 6: Final answer
   x = 39,968.48