Finding the Fourth Proportional to 14,799.67, 22,091.55 and 12,931.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,799.67 : 22,091.55 = 12,931.31 : x
2. Step 2: Convert to fraction form
   14,799.67/22,091.55 = 12,931.31/x
3. Step 3: Cross multiply
   14,799.67x = 22,091.55 × 12,931.31
4. Step 4: Simplify right side
   14,799.67x = 285,672,654.07
5. Step 5: Solve for x
   x = 285,672,654.07/14,799.67
6. Step 6: Final answer
   x = 19,302.63