Finding the Fourth Proportional to 12,127.50, 16,736.13 and 7,410.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,127.50 : 16,736.13 = 7,410.78 : x
2. Step 2: Convert to fraction form
   12,127.50/16,736.13 = 7,410.78/x
3. Step 3: Cross multiply
   12,127.50x = 16,736.13 × 7,410.78
4. Step 4: Simplify right side
   12,127.50x = 124,027,777.48
5. Step 5: Solve for x
   x = 124,027,777.48/12,127.50
6. Step 6: Final answer
   x = 10,226.99