Finding the Fourth Proportional to 42,429.10, 63,627.45 and 12,837.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,429.10 : 63,627.45 = 12,837.10 : x
2. Step 2: Convert to fraction form
   42,429.10/63,627.45 = 12,837.10/x
3. Step 3: Cross multiply
   42,429.10x = 63,627.45 × 12,837.10
4. Step 4: Simplify right side
   42,429.10x = 816,791,938.40
5. Step 5: Solve for x
   x = 816,791,938.40/42,429.10
6. Step 6: Final answer
   x = 19,250.75