Finding the Fourth Proportional to 42,411.90, 63,627.84 and 12,829.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,411.90 : 63,627.84 = 12,829.98 : x
2. Step 2: Convert to fraction form
   42,411.90/63,627.84 = 12,829.98/x
3. Step 3: Cross multiply
   42,411.90x = 63,627.84 × 12,829.98
4. Step 4: Simplify right side
   42,411.90x = 816,343,914.64
5. Step 5: Solve for x
   x = 816,343,914.64/42,411.90
6. Step 6: Final answer
   x = 19,247.99