Finding the Fourth Proportional to 31,530.17, 43,509.89 and 18,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,530.17 : 43,509.89 = 18,100.54 : x
2. Step 2: Convert to fraction form
   31,530.17/43,509.89 = 18,100.54/x
3. Step 3: Cross multiply
   31,530.17x = 43,509.89 × 18,100.54
4. Step 4: Simplify right side
   31,530.17x = 787,552,504.34
5. Step 5: Solve for x
   x = 787,552,504.34/31,530.17
6. Step 6: Final answer
   x = 24,977.74