Finding the Fourth Proportional to 42,528.99, 63,802.59 and 12,949.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,528.99 : 63,802.59 = 12,949.27 : x
2. Step 2: Convert to fraction form
   42,528.99/63,802.59 = 12,949.27/x
3. Step 3: Cross multiply
   42,528.99x = 63,802.59 × 12,949.27
4. Step 4: Simplify right side
   42,528.99x = 826,196,964.61
5. Step 5: Solve for x
   x = 826,196,964.61/42,528.99
6. Step 6: Final answer
   x = 19,426.68