Finding the Fourth Proportional to 5,427.94, 8,137.29 and 5,169.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,427.94 : 8,137.29 = 5,169.60 : x
2. Step 2: Convert to fraction form
   5,427.94/8,137.29 = 5,169.60/x
3. Step 3: Cross multiply
   5,427.94x = 8,137.29 × 5,169.60
4. Step 4: Simplify right side
   5,427.94x = 42,066,534.38
5. Step 5: Solve for x
   x = 42,066,534.38/5,427.94
6. Step 6: Final answer
   x = 7,750.00