Finding the Fourth Proportional to 10,954.84, 16,436.72 and 5,107.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,954.84 : 16,436.72 = 5,107.85 : x
2. Step 2: Convert to fraction form
   10,954.84/16,436.72 = 5,107.85/x
3. Step 3: Cross multiply
   10,954.84x = 16,436.72 × 5,107.85
4. Step 4: Simplify right side
   10,954.84x = 83,956,274.71
5. Step 5: Solve for x
   x = 83,956,274.71/10,954.84
6. Step 6: Final answer
   x = 7,663.86