Finding the Fourth Proportional to 11,899.91, 17,850.70 and 4,784.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,899.91 : 17,850.70 = 4,784.15 : x
2. Step 2: Convert to fraction form
   11,899.91/17,850.70 = 4,784.15/x
3. Step 3: Cross multiply
   11,899.91x = 17,850.70 × 4,784.15
4. Step 4: Simplify right side
   11,899.91x = 85,400,426.41
5. Step 5: Solve for x
   x = 85,400,426.41/11,899.91
6. Step 6: Final answer
   x = 7,176.56