Finding the Fourth Proportional to 31,561.37, 47,405.10 and 19,736.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,561.37 : 47,405.10 = 19,736.18 : x
2. Step 2: Convert to fraction form
   31,561.37/47,405.10 = 19,736.18/x
3. Step 3: Cross multiply
   31,561.37x = 47,405.10 × 19,736.18
4. Step 4: Simplify right side
   31,561.37x = 935,595,349.49
5. Step 5: Solve for x
   x = 935,595,349.49/31,561.37
6. Step 6: Final answer
   x = 29,643.69