Finding the Fourth Proportional to 13,111.34, 18,093.93 and 7,143.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.34 : 18,093.93 = 7,143.00 : x
2. Step 2: Convert to fraction form
   13,111.34/18,093.93 = 7,143.00/x
3. Step 3: Cross multiply
   13,111.34x = 18,093.93 × 7,143.00
4. Step 4: Simplify right side
   13,111.34x = 129,244,912.98
5. Step 5: Solve for x
   x = 129,244,912.98/13,111.34
6. Step 6: Final answer
   x = 9,857.49