Finding the Fourth Proportional to 9,747.72, 14,600.52 and 5,121

Step by Step Solution

1. Step 1: Write the proportion equation
   9,747.72 : 14,600.52 = 5,121 : x
2. Step 2: Convert to fraction form
   9,747.72/14,600.52 = 5,121/x
3. Step 3: Cross multiply
   9,747.72x = 14,600.52 × 5,121
4. Step 4: Simplify right side
   9,747.72x = 74,769,262.92
5. Step 5: Solve for x
   x = 74,769,262.92/9,747.72
6. Step 6: Final answer
   x = 7,670.44