Finding the Fourth Proportional to 13,066.57, 19,586.43 and 5,165.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.57 : 19,586.43 = 5,165.88 : x
2. Step 2: Convert to fraction form
   13,066.57/19,586.43 = 5,165.88/x
3. Step 3: Cross multiply
   13,066.57x = 19,586.43 × 5,165.88
4. Step 4: Simplify right side
   13,066.57x = 101,181,147.01
5. Step 5: Solve for x
   x = 101,181,147.01/13,066.57
6. Step 6: Final answer
   x = 7,743.51