Finding the Fourth Proportional to 28,498.50, 42,747.73 and 7,722

Step by Step Solution

1. Step 1: Write the proportion equation
   28,498.50 : 42,747.73 = 7,722 : x
2. Step 2: Convert to fraction form
   28,498.50/42,747.73 = 7,722/x
3. Step 3: Cross multiply
   28,498.50x = 42,747.73 × 7,722
4. Step 4: Simplify right side
   28,498.50x = 330,097,971.06
5. Step 5: Solve for x
   x = 330,097,971.06/28,498.50
6. Step 6: Final answer
   x = 11,582.99