Finding the Fourth Proportional to 19,156.62, 28,796.42 and 17,787

Step by Step Solution

1. Step 1: Write the proportion equation
   19,156.62 : 28,796.42 = 17,787 : x
2. Step 2: Convert to fraction form
   19,156.62/28,796.42 = 17,787/x
3. Step 3: Cross multiply
   19,156.62x = 28,796.42 × 17,787
4. Step 4: Simplify right side
   19,156.62x = 512,201,922.54
5. Step 5: Solve for x
   x = 512,201,922.54/19,156.62
6. Step 6: Final answer
   x = 26,737.59