Finding the Fourth Proportional to 31,128.16, 46,670.64 and 11,404

Step by Step Solution

1. Step 1: Write the proportion equation
   31,128.16 : 46,670.64 = 11,404 : x
2. Step 2: Convert to fraction form
   31,128.16/46,670.64 = 11,404/x
3. Step 3: Cross multiply
   31,128.16x = 46,670.64 × 11,404
4. Step 4: Simplify right side
   31,128.16x = 532,231,978.56
5. Step 5: Solve for x
   x = 532,231,978.56/31,128.16
6. Step 6: Final answer
   x = 17,098.09