Finding the Fourth Proportional to 31,218, 43,081.56 and 19,289.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,218 : 43,081.56 = 19,289.52 : x
2. Step 2: Convert to fraction form
   31,218/43,081.56 = 19,289.52/x
3. Step 3: Cross multiply
   31,218x = 43,081.56 × 19,289.52
4. Step 4: Simplify right side
   31,218x = 831,022,613.25
5. Step 5: Solve for x
   x = 831,022,613.25/31,218
6. Step 6: Final answer
   x = 26,619.98