Finding the Fourth Proportional to 31,092.40, 46,624.84 and 8,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,092.40 : 46,624.84 = 8,900.72 : x
2. Step 2: Convert to fraction form
   31,092.40/46,624.84 = 8,900.72/x
3. Step 3: Cross multiply
   31,092.40x = 46,624.84 × 8,900.72
4. Step 4: Simplify right side
   31,092.40x = 414,994,645.88
5. Step 5: Solve for x
   x = 414,994,645.88/31,092.40
6. Step 6: Final answer
   x = 13,347.14