Finding the Fourth Proportional to 11,917.72, 17,863.62 and 4,984.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,917.72 : 17,863.62 = 4,984.12 : x
2. Step 2: Convert to fraction form
   11,917.72/17,863.62 = 4,984.12/x
3. Step 3: Cross multiply
   11,917.72x = 17,863.62 × 4,984.12
4. Step 4: Simplify right side
   11,917.72x = 89,034,425.71
5. Step 5: Solve for x
   x = 89,034,425.71/11,917.72
6. Step 6: Final answer
   x = 7,470.76