Finding the Fourth Proportional to 5,345.42, 7,376.82 and 2,987.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,345.42 : 7,376.82 = 2,987.71 : x
2. Step 2: Convert to fraction form
   5,345.42/7,376.82 = 2,987.71/x
3. Step 3: Cross multiply
   5,345.42x = 7,376.82 × 2,987.71
4. Step 4: Simplify right side
   5,345.42x = 22,039,798.88
5. Step 5: Solve for x
   x = 22,039,798.88/5,345.42
6. Step 6: Final answer
   x = 4,123.12