Finding the Fourth Proportional to 31,552.04, 47,291.72 and 12,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,552.04 : 47,291.72 = 12,811.50 : x
2. Step 2: Convert to fraction form
   31,552.04/47,291.72 = 12,811.50/x
3. Step 3: Cross multiply
   31,552.04x = 47,291.72 × 12,811.50
4. Step 4: Simplify right side
   31,552.04x = 605,877,914.82
5. Step 5: Solve for x
   x = 605,877,914.82/31,552.04
6. Step 6: Final answer
   x = 19,202.50