Finding the Fourth Proportional to 10,870.49, 16,308.84 and 5,325.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.49 : 16,308.84 = 5,325.45 : x
2. Step 2: Convert to fraction form
   10,870.49/16,308.84 = 5,325.45/x
3. Step 3: Cross multiply
   10,870.49x = 16,308.84 × 5,325.45
4. Step 4: Simplify right side
   10,870.49x = 86,852,008.40
5. Step 5: Solve for x
   x = 86,852,008.40/10,870.49
6. Step 6: Final answer
   x = 7,989.71