Finding the Fourth Proportional to 31,085.98, 46,645.47 and 13,557.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.98 : 46,645.47 = 13,557.17 : x
2. Step 2: Convert to fraction form
   31,085.98/46,645.47 = 13,557.17/x
3. Step 3: Cross multiply
   31,085.98x = 46,645.47 × 13,557.17
4. Step 4: Simplify right side
   31,085.98x = 632,380,683.13
5. Step 5: Solve for x
   x = 632,380,683.13/31,085.98
6. Step 6: Final answer
   x = 20,342.96