Finding the Fourth Proportional to 10,870.14, 15,000.78 and 5,902.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.14 : 15,000.78 = 5,902.14 : x
2. Step 2: Convert to fraction form
   10,870.14/15,000.78 = 5,902.14/x
3. Step 3: Cross multiply
   10,870.14x = 15,000.78 × 5,902.14
4. Step 4: Simplify right side
   10,870.14x = 88,536,703.67
5. Step 5: Solve for x
   x = 88,536,703.67/10,870.14
6. Step 6: Final answer
   x = 8,144.95