Finding the Fourth Proportional to 28,314.12, 42,426.90 and 17,904

Step by Step Solution

1. Step 1: Write the proportion equation
   28,314.12 : 42,426.90 = 17,904 : x
2. Step 2: Convert to fraction form
   28,314.12/42,426.90 = 17,904/x
3. Step 3: Cross multiply
   28,314.12x = 42,426.90 × 17,904
4. Step 4: Simplify right side
   28,314.12x = 759,611,217.60
5. Step 5: Solve for x
   x = 759,611,217.60/28,314.12
6. Step 6: Final answer
   x = 26,828.00