Finding the Fourth Proportional to 13,892.76, 19,171.62 and 7,923.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,892.76 : 19,171.62 = 7,923.87 : x
2. Step 2: Convert to fraction form
   13,892.76/19,171.62 = 7,923.87/x
3. Step 3: Cross multiply
   13,892.76x = 19,171.62 × 7,923.87
4. Step 4: Simplify right side
   13,892.76x = 151,913,424.57
5. Step 5: Solve for x
   x = 151,913,424.57/13,892.76
6. Step 6: Final answer
   x = 10,934.72