Finding the Fourth Proportional to 52,189.47, 72,021.63 and 28,316.34

Step by Step Solution

1. Step 1: Write the proportion equation
   52,189.47 : 72,021.63 = 28,316.34 : x
2. Step 2: Convert to fraction form
   52,189.47/72,021.63 = 28,316.34/x
3. Step 3: Cross multiply
   52,189.47x = 72,021.63 × 28,316.34
4. Step 4: Simplify right side
   52,189.47x = 2,039,388,962.43
5. Step 5: Solve for x
   x = 2,039,388,962.43/52,189.47
6. Step 6: Final answer
   x = 39,076.64