Finding the Fourth Proportional to 31,095.72, 46,646.82 and 13,328.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.72 : 46,646.82 = 13,328.16 : x
2. Step 2: Convert to fraction form
   31,095.72/46,646.82 = 13,328.16/x
3. Step 3: Cross multiply
   31,095.72x = 46,646.82 × 13,328.16
4. Step 4: Simplify right side
   31,095.72x = 621,716,280.45
5. Step 5: Solve for x
   x = 621,716,280.45/31,095.72
6. Step 6: Final answer
   x = 19,993.63