Finding the Fourth Proportional to 11,820.89, 16,308.27 and 6,783.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,820.89 : 16,308.27 = 6,783.30 : x
2. Step 2: Convert to fraction form
   11,820.89/16,308.27 = 6,783.30/x
3. Step 3: Cross multiply
   11,820.89x = 16,308.27 × 6,783.30
4. Step 4: Simplify right side
   11,820.89x = 110,623,887.89
5. Step 5: Solve for x
   x = 110,623,887.89/11,820.89
6. Step 6: Final answer
   x = 9,358.34