Finding the Fourth Proportional to 31,437, 43,383.78 and 18,860.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,437 : 43,383.78 = 18,860.04 : x
2. Step 2: Convert to fraction form
   31,437/43,383.78 = 18,860.04/x
3. Step 3: Cross multiply
   31,437x = 43,383.78 × 18,860.04
4. Step 4: Simplify right side
   31,437x = 818,219,826.15
5. Step 5: Solve for x
   x = 818,219,826.15/31,437
6. Step 6: Final answer
   x = 26,027.29