Finding the Fourth Proportional to 10,513.55, 14,509.73 and 7,856.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,513.55 : 14,509.73 = 7,856.34 : x
2. Step 2: Convert to fraction form
   10,513.55/14,509.73 = 7,856.34/x
3. Step 3: Cross multiply
   10,513.55x = 14,509.73 × 7,856.34
4. Step 4: Simplify right side
   10,513.55x = 113,993,332.91
5. Step 5: Solve for x
   x = 113,993,332.91/10,513.55
6. Step 6: Final answer
   x = 10,842.52