Finding the Fourth Proportional to 31,096.47, 46,647.95 and 13,328.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.47 : 46,647.95 = 13,328.91 : x
2. Step 2: Convert to fraction form
   31,096.47/46,647.95 = 13,328.91/x
3. Step 3: Cross multiply
   31,096.47x = 46,647.95 × 13,328.91
4. Step 4: Simplify right side
   31,096.47x = 621,766,260.59
5. Step 5: Solve for x
   x = 621,766,260.59/31,096.47
6. Step 6: Final answer
   x = 19,994.75