Finding the Fourth Proportional to 13,111.10, 18,093.34 and 7,806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.10 : 18,093.34 = 7,806.10 : x
2. Step 2: Convert to fraction form
   13,111.10/18,093.34 = 7,806.10/x
3. Step 3: Cross multiply
   13,111.10x = 18,093.34 × 7,806.10
4. Step 4: Simplify right side
   13,111.10x = 141,238,421.37
5. Step 5: Solve for x
   x = 141,238,421.37/13,111.10
6. Step 6: Final answer
   x = 10,772.43