Finding the Fourth Proportional to 10,155.52, 14,015.96 and 5,680.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,155.52 : 14,015.96 = 5,680.99 : x
2. Step 2: Convert to fraction form
   10,155.52/14,015.96 = 5,680.99/x
3. Step 3: Cross multiply
   10,155.52x = 14,015.96 × 5,680.99
4. Step 4: Simplify right side
   10,155.52x = 79,624,528.60
5. Step 5: Solve for x
   x = 79,624,528.60/10,155.52
6. Step 6: Final answer
   x = 7,840.52