Finding the Fourth Proportional to 8,043.10, 12,089.25 and 7,870.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,043.10 : 12,089.25 = 7,870.84 : x
2. Step 2: Convert to fraction form
   8,043.10/12,089.25 = 7,870.84/x
3. Step 3: Cross multiply
   8,043.10x = 12,089.25 × 7,870.84
4. Step 4: Simplify right side
   8,043.10x = 95,152,522.25
5. Step 5: Solve for x
   x = 95,152,522.25/8,043.10
6. Step 6: Final answer
   x = 11,830.33