Finding the Fourth Proportional to 12,051.56, 18,073.69 and 7,119.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,051.56 : 18,073.69 = 7,119.88 : x
2. Step 2: Convert to fraction form
   12,051.56/18,073.69 = 7,119.88/x
3. Step 3: Cross multiply
   12,051.56x = 18,073.69 × 7,119.88
4. Step 4: Simplify right side
   12,051.56x = 128,682,503.96
5. Step 5: Solve for x
   x = 128,682,503.96/12,051.56
6. Step 6: Final answer
   x = 10,677.66