Finding the Fourth Proportional to 42,288.96, 63,426.83 and 18,591.26

Step by Step Solution

1. Step 1: Write the proportion equation
   42,288.96 : 63,426.83 = 18,591.26 : x
2. Step 2: Convert to fraction form
   42,288.96/63,426.83 = 18,591.26/x
3. Step 3: Cross multiply
   42,288.96x = 63,426.83 × 18,591.26
4. Step 4: Simplify right side
   42,288.96x = 1,179,184,687.51
5. Step 5: Solve for x
   x = 1,179,184,687.51/42,288.96
6. Step 6: Final answer
   x = 27,883.98