Finding the Fourth Proportional to 12,806.31, 19,196.28 and 4,906.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,806.31 : 19,196.28 = 4,906.68 : x
2. Step 2: Convert to fraction form
   12,806.31/19,196.28 = 4,906.68/x
3. Step 3: Cross multiply
   12,806.31x = 19,196.28 × 4,906.68
4. Step 4: Simplify right side
   12,806.31x = 94,190,003.15
5. Step 5: Solve for x
   x = 94,190,003.15/12,806.31
6. Step 6: Final answer
   x = 7,354.97