Finding the Fourth Proportional to 31,076.84, 42,886.32 and 18,330.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.84 : 42,886.32 = 18,330.32 : x
2. Step 2: Convert to fraction form
   31,076.84/42,886.32 = 18,330.32/x
3. Step 3: Cross multiply
   31,076.84x = 42,886.32 × 18,330.32
4. Step 4: Simplify right side
   31,076.84x = 786,119,969.22
5. Step 5: Solve for x
   x = 786,119,969.22/31,076.84
6. Step 6: Final answer
   x = 25,296.01