Finding the Fourth Proportional to 12,062.25, 16,645.95 and 7,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,062.25 : 16,645.95 = 7,870.50 : x
2. Step 2: Convert to fraction form
   12,062.25/16,645.95 = 7,870.50/x
3. Step 3: Cross multiply
   12,062.25x = 16,645.95 × 7,870.50
4. Step 4: Simplify right side
   12,062.25x = 131,011,949.48
5. Step 5: Solve for x
   x = 131,011,949.48/12,062.25
6. Step 6: Final answer
   x = 10,861.32