Finding the Fourth Proportional to 28,404.12, 42,606.24 and 17,994

Step by Step Solution

1. Step 1: Write the proportion equation
   28,404.12 : 42,606.24 = 17,994 : x
2. Step 2: Convert to fraction form
   28,404.12/42,606.24 = 17,994/x
3. Step 3: Cross multiply
   28,404.12x = 42,606.24 × 17,994
4. Step 4: Simplify right side
   28,404.12x = 766,656,682.56
5. Step 5: Solve for x
   x = 766,656,682.56/28,404.12
6. Step 6: Final answer
   x = 26,991.04