Finding the Fourth Proportional to 52,784.70, 79,109.37 and 21,582.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.70 : 79,109.37 = 21,582.78 : x
2. Step 2: Convert to fraction form
   52,784.70/79,109.37 = 21,582.78/x
3. Step 3: Cross multiply
   52,784.70x = 79,109.37 × 21,582.78
4. Step 4: Simplify right side
   52,784.70x = 1,707,400,128.65
5. Step 5: Solve for x
   x = 1,707,400,128.65/52,784.70
6. Step 6: Final answer
   x = 32,346.50