Finding the Fourth Proportional to 12,308.48, 16,991.46 and 8,336.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.48 : 16,991.46 = 8,336.01 : x
2. Step 2: Convert to fraction form
   12,308.48/16,991.46 = 8,336.01/x
3. Step 3: Cross multiply
   12,308.48x = 16,991.46 × 8,336.01
4. Step 4: Simplify right side
   12,308.48x = 141,640,980.47
5. Step 5: Solve for x
   x = 141,640,980.47/12,308.48
6. Step 6: Final answer
   x = 11,507.60