Finding the Fourth Proportional to 5,588.42, 7,698.72 and 3,906.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,588.42 : 7,698.72 = 3,906.71 : x
2. Step 2: Convert to fraction form
   5,588.42/7,698.72 = 3,906.71/x
3. Step 3: Cross multiply
   5,588.42x = 7,698.72 × 3,906.71
4. Step 4: Simplify right side
   5,588.42x = 30,076,666.41
5. Step 5: Solve for x
   x = 30,076,666.41/5,588.42
6. Step 6: Final answer
   x = 5,381.96