Finding the Fourth Proportional to 10,528.95, 14,530.98 and 7,871.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,528.95 : 14,530.98 = 7,871.76 : x
2. Step 2: Convert to fraction form
   10,528.95/14,530.98 = 7,871.76/x
3. Step 3: Cross multiply
   10,528.95x = 14,530.98 × 7,871.76
4. Step 4: Simplify right side
   10,528.95x = 114,384,387.12
5. Step 5: Solve for x
   x = 114,384,387.12/10,528.95
6. Step 6: Final answer
   x = 10,863.80