Finding the Fourth Proportional to 13,885.82, 19,162.20 and 7,917.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,885.82 : 19,162.20 = 7,917.82 : x
2. Step 2: Convert to fraction form
   13,885.82/19,162.20 = 7,917.82/x
3. Step 3: Cross multiply
   13,885.82x = 19,162.20 × 7,917.82
4. Step 4: Simplify right side
   13,885.82x = 151,722,850.40
5. Step 5: Solve for x
   x = 151,722,850.40/13,885.82
6. Step 6: Final answer
   x = 10,926.46