Finding the Fourth Proportional to 12,011.56, 18,013.69 and 7,079.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,011.56 : 18,013.69 = 7,079.88 : x
2. Step 2: Convert to fraction form
   12,011.56/18,013.69 = 7,079.88/x
3. Step 3: Cross multiply
   12,011.56x = 18,013.69 × 7,079.88
4. Step 4: Simplify right side
   12,011.56x = 127,534,763.56
5. Step 5: Solve for x
   x = 127,534,763.56/12,011.56
6. Step 6: Final answer
   x = 10,617.67