Finding the Fourth Proportional to 19,591.72, 27,017.86 and 12,883

Step by Step Solution

1. Step 1: Write the proportion equation
   19,591.72 : 27,017.86 = 12,883 : x
2. Step 2: Convert to fraction form
   19,591.72/27,017.86 = 12,883/x
3. Step 3: Cross multiply
   19,591.72x = 27,017.86 × 12,883
4. Step 4: Simplify right side
   19,591.72x = 348,071,090.38
5. Step 5: Solve for x
   x = 348,071,090.38/19,591.72
6. Step 6: Final answer
   x = 17,766.23