Finding the Fourth Proportional to 31,056.60, 46,570.56 and 9,992.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.60 : 46,570.56 = 9,992.72 : x
2. Step 2: Convert to fraction form
   31,056.60/46,570.56 = 9,992.72/x
3. Step 3: Cross multiply
   31,056.60x = 46,570.56 × 9,992.72
4. Step 4: Simplify right side
   31,056.60x = 465,366,566.32
5. Step 5: Solve for x
   x = 465,366,566.32/31,056.60
6. Step 6: Final answer
   x = 14,984.47