Finding the Fourth Proportional to 22,300.31, 30,788.64 and 19,906.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,300.31 : 30,788.64 = 19,906.09 : x
2. Step 2: Convert to fraction form
   22,300.31/30,788.64 = 19,906.09/x
3. Step 3: Cross multiply
   22,300.31x = 30,788.64 × 19,906.09
4. Step 4: Simplify right side
   22,300.31x = 612,881,361.85
5. Step 5: Solve for x
   x = 612,881,361.85/22,300.31
6. Step 6: Final answer
   x = 27,483.08