Finding the Fourth Proportional to 31,128.82, 46,665.48 and 11,402.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,128.82 : 46,665.48 = 11,402.76 : x
2. Step 2: Convert to fraction form
   31,128.82/46,665.48 = 11,402.76/x
3. Step 3: Cross multiply
   31,128.82x = 46,665.48 × 11,402.76
4. Step 4: Simplify right side
   31,128.82x = 532,115,268.72
5. Step 5: Solve for x
   x = 532,115,268.72/31,128.82
6. Step 6: Final answer
   x = 17,093.97