Finding the Fourth Proportional to 52,309.36, 72,186.98 and 28,436.03

Step by Step Solution

1. Step 1: Write the proportion equation
   52,309.36 : 72,186.98 = 28,436.03 : x
2. Step 2: Convert to fraction form
   52,309.36/72,186.98 = 28,436.03/x
3. Step 3: Cross multiply
   52,309.36x = 72,186.98 × 28,436.03
4. Step 4: Simplify right side
   52,309.36x = 2,052,711,128.89
5. Step 5: Solve for x
   x = 2,052,711,128.89/52,309.36
6. Step 6: Final answer
   x = 39,241.76