Finding the Fourth Proportional to 31,603.77, 47,446.83 and 21,141

Step by Step Solution

1. Step 1: Write the proportion equation
   31,603.77 : 47,446.83 = 21,141 : x
2. Step 2: Convert to fraction form
   31,603.77/47,446.83 = 21,141/x
3. Step 3: Cross multiply
   31,603.77x = 47,446.83 × 21,141
4. Step 4: Simplify right side
   31,603.77x = 1,003,073,433.03
5. Step 5: Solve for x
   x = 1,003,073,433.03/31,603.77
6. Step 6: Final answer
   x = 31,739.04