Finding the Fourth Proportional to 31,259.61, 46,894.28 and 10,478.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,259.61 : 46,894.28 = 10,478.25 : x
2. Step 2: Convert to fraction form
   31,259.61/46,894.28 = 10,478.25/x
3. Step 3: Cross multiply
   31,259.61x = 46,894.28 × 10,478.25
4. Step 4: Simplify right side
   31,259.61x = 491,369,937.02
5. Step 5: Solve for x
   x = 491,369,937.02/31,259.61
6. Step 6: Final answer
   x = 15,719.00