Finding the Fourth Proportional to 5,345.72, 7,377.25 and 2,987.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,345.72 : 7,377.25 = 2,987.86 : x
2. Step 2: Convert to fraction form
   5,345.72/7,377.25 = 2,987.86/x
3. Step 3: Cross multiply
   5,345.72x = 7,377.25 × 2,987.86
4. Step 4: Simplify right side
   5,345.72x = 22,042,212.86
5. Step 5: Solve for x
   x = 22,042,212.86/5,345.72
6. Step 6: Final answer
   x = 4,123.34