Finding the Fourth Proportional to 12,111.90, 18,150.94 and 5,870.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.90 : 18,150.94 = 5,870.26 : x
2. Step 2: Convert to fraction form
   12,111.90/18,150.94 = 5,870.26/x
3. Step 3: Cross multiply
   12,111.90x = 18,150.94 × 5,870.26
4. Step 4: Simplify right side
   12,111.90x = 106,550,676.99
5. Step 5: Solve for x
   x = 106,550,676.99/12,111.90
6. Step 6: Final answer
   x = 8,797.19