Finding the Fourth Proportional to 12,137.16, 16,746.30 and 7,419.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,137.16 : 16,746.30 = 7,419.72 : x
2. Step 2: Convert to fraction form
   12,137.16/16,746.30 = 7,419.72/x
3. Step 3: Cross multiply
   12,137.16x = 16,746.30 × 7,419.72
4. Step 4: Simplify right side
   12,137.16x = 124,252,857.04
5. Step 5: Solve for x
   x = 124,252,857.04/12,137.16
6. Step 6: Final answer
   x = 10,237.39