Finding the Fourth Proportional to 10,345.55, 14,276.81 and 5,629.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,345.55 : 14,276.81 = 5,629.87 : x
2. Step 2: Convert to fraction form
   10,345.55/14,276.81 = 5,629.87/x
3. Step 3: Cross multiply
   10,345.55x = 14,276.81 × 5,629.87
4. Step 4: Simplify right side
   10,345.55x = 80,376,484.78
5. Step 5: Solve for x
   x = 80,376,484.78/10,345.55
6. Step 6: Final answer
   x = 7,769.18