Finding the Fourth Proportional to 7,891.72, 11,853.34 and 4,935.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,891.72 : 11,853.34 = 4,935.42 : x
2. Step 2: Convert to fraction form
   7,891.72/11,853.34 = 4,935.42/x
3. Step 3: Cross multiply
   7,891.72x = 11,853.34 × 4,935.42
4. Step 4: Simplify right side
   7,891.72x = 58,501,211.30
5. Step 5: Solve for x
   x = 58,501,211.30/7,891.72
6. Step 6: Final answer
   x = 7,412.99