Finding the Fourth Proportional to 52,189.90, 72,022.35 and 28,316.62

Step by Step Solution

1. Step 1: Write the proportion equation
   52,189.90 : 72,022.35 = 28,316.62 : x
2. Step 2: Convert to fraction form
   52,189.90/72,022.35 = 28,316.62/x
3. Step 3: Cross multiply
   52,189.90x = 72,022.35 × 28,316.62
4. Step 4: Simplify right side
   52,189.90x = 2,039,429,516.46
5. Step 5: Solve for x
   x = 2,039,429,516.46/52,189.90
6. Step 6: Final answer
   x = 39,077.09