Finding the Fourth Proportional to 12,416.42, 18,627.69 and 10,199.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,416.42 : 18,627.69 = 10,199.00 : x
2. Step 2: Convert to fraction form
   12,416.42/18,627.69 = 10,199.00/x
3. Step 3: Cross multiply
   12,416.42x = 18,627.69 × 10,199.00
4. Step 4: Simplify right side
   12,416.42x = 189,983,717.17
5. Step 5: Solve for x
   x = 189,983,717.17/12,416.42
6. Step 6: Final answer
   x = 15,301.01