Finding the Fourth Proportional to 9,870.37, 14,815.80 and 5,718.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.37 : 14,815.80 = 5,718.48 : x
2. Step 2: Convert to fraction form
   9,870.37/14,815.80 = 5,718.48/x
3. Step 3: Cross multiply
   9,870.37x = 14,815.80 × 5,718.48
4. Step 4: Simplify right side
   9,870.37x = 84,723,827.39
5. Step 5: Solve for x
   x = 84,723,827.39/9,870.37
6. Step 6: Final answer
   x = 8,583.66