Finding the Fourth Proportional to 51,615.86, 71,237.86 and 28,964.00

Step by Step Solution

1. Step 1: Write the proportion equation
   51,615.86 : 71,237.86 = 28,964.00 : x
2. Step 2: Convert to fraction form
   51,615.86/71,237.86 = 28,964.00/x
3. Step 3: Cross multiply
   51,615.86x = 71,237.86 × 28,964.00
4. Step 4: Simplify right side
   51,615.86x = 2,063,333,482.72
5. Step 5: Solve for x
   x = 2,063,333,482.72/51,615.86
6. Step 6: Final answer
   x = 39,974.80