Finding the Fourth Proportional to 9,054.91, 12,495.55 and 5,021.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.91 : 12,495.55 = 5,021.72 : x
2. Step 2: Convert to fraction form
   9,054.91/12,495.55 = 5,021.72/x
3. Step 3: Cross multiply
   9,054.91x = 12,495.55 × 5,021.72
4. Step 4: Simplify right side
   9,054.91x = 62,749,153.35
5. Step 5: Solve for x
   x = 62,749,153.35/9,054.91
6. Step 6: Final answer
   x = 6,929.85