Finding the Fourth Proportional to 40,819.48, 61,223.46 and 12,733

Step by Step Solution

1. Step 1: Write the proportion equation
   40,819.48 : 61,223.46 = 12,733 : x
2. Step 2: Convert to fraction form
   40,819.48/61,223.46 = 12,733/x
3. Step 3: Cross multiply
   40,819.48x = 61,223.46 × 12,733
4. Step 4: Simplify right side
   40,819.48x = 779,558,316.18
5. Step 5: Solve for x
   x = 779,558,316.18/40,819.48
6. Step 6: Final answer
   x = 19,097.70