Finding the Fourth Proportional to 5,347.82, 7,379.91 and 2,957.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,347.82 : 7,379.91 = 2,957.72 : x
2. Step 2: Convert to fraction form
   5,347.82/7,379.91 = 2,957.72/x
3. Step 3: Cross multiply
   5,347.82x = 7,379.91 × 2,957.72
4. Step 4: Simplify right side
   5,347.82x = 21,827,670.51
5. Step 5: Solve for x
   x = 21,827,670.51/5,347.82
6. Step 6: Final answer
   x = 4,081.60