Finding the Fourth Proportional to 17,887.30, 26,834.79 and 5,406.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,887.30 : 26,834.79 = 5,406.34 : x
2. Step 2: Convert to fraction form
   17,887.30/26,834.79 = 5,406.34/x
3. Step 3: Cross multiply
   17,887.30x = 26,834.79 × 5,406.34
4. Step 4: Simplify right side
   17,887.30x = 145,077,998.57
5. Step 5: Solve for x
   x = 145,077,998.57/17,887.30
6. Step 6: Final answer
   x = 8,110.67