Finding the Fourth Proportional to 11,760.53, 17,638.97 and 3,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,760.53 : 17,638.97 = 3,438.59 : x
2. Step 2: Convert to fraction form
   11,760.53/17,638.97 = 3,438.59/x
3. Step 3: Cross multiply
   11,760.53x = 17,638.97 × 3,438.59
4. Step 4: Simplify right side
   11,760.53x = 60,653,238.55
5. Step 5: Solve for x
   x = 60,653,238.55/11,760.53
6. Step 6: Final answer
   x = 5,157.35