Finding the Fourth Proportional to 13,880.56, 19,154.68 and 7,914.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,880.56 : 19,154.68 = 7,914.15 : x
2. Step 2: Convert to fraction form
   13,880.56/19,154.68 = 7,914.15/x
3. Step 3: Cross multiply
   13,880.56x = 19,154.68 × 7,914.15
4. Step 4: Simplify right side
   13,880.56x = 151,593,010.72
5. Step 5: Solve for x
   x = 151,593,010.72/13,880.56
6. Step 6: Final answer
   x = 10,921.25