Finding the Fourth Proportional to 30,141.89, 45,214.71 and 7,955.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,141.89 : 45,214.71 = 7,955.30 : x
2. Step 2: Convert to fraction form
   30,141.89/45,214.71 = 7,955.30/x
3. Step 3: Cross multiply
   30,141.89x = 45,214.71 × 7,955.30
4. Step 4: Simplify right side
   30,141.89x = 359,696,356.39
5. Step 5: Solve for x
   x = 359,696,356.39/30,141.89
6. Step 6: Final answer
   x = 11,933.44