Finding the Fourth Proportional to 11,814.68, 17,724.18 and 4,889.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,814.68 : 17,724.18 = 4,889.72 : x
2. Step 2: Convert to fraction form
   11,814.68/17,724.18 = 4,889.72/x
3. Step 3: Cross multiply
   11,814.68x = 17,724.18 × 4,889.72
4. Step 4: Simplify right side
   11,814.68x = 86,666,277.43
5. Step 5: Solve for x
   x = 86,666,277.43/11,814.68
6. Step 6: Final answer
   x = 7,335.47