Finding the Fourth Proportional to 10,137.98, 15,209.34 and 3,474.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,137.98 : 15,209.34 = 3,474.55 : x
2. Step 2: Convert to fraction form
   10,137.98/15,209.34 = 3,474.55/x
3. Step 3: Cross multiply
   10,137.98x = 15,209.34 × 3,474.55
4. Step 4: Simplify right side
   10,137.98x = 52,845,612.30
5. Step 5: Solve for x
   x = 52,845,612.30/10,137.98
6. Step 6: Final answer
   x = 5,212.64