Finding the Fourth Proportional to 11,807.33, 17,713.60 and 3,912.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,807.33 : 17,713.60 = 3,912.30 : x
2. Step 2: Convert to fraction form
   11,807.33/17,713.60 = 3,912.30/x
3. Step 3: Cross multiply
   11,807.33x = 17,713.60 × 3,912.30
4. Step 4: Simplify right side
   11,807.33x = 69,300,809.15
5. Step 5: Solve for x
   x = 69,300,809.15/11,807.33
6. Step 6: Final answer
   x = 5,869.30