Finding the Fourth Proportional to 42,537.82, 63,804.56 and 12,955

Step by Step Solution

1. Step 1: Write the proportion equation
   42,537.82 : 63,804.56 = 12,955 : x
2. Step 2: Convert to fraction form
   42,537.82/63,804.56 = 12,955/x
3. Step 3: Cross multiply
   42,537.82x = 63,804.56 × 12,955
4. Step 4: Simplify right side
   42,537.82x = 826,588,074.80
5. Step 5: Solve for x
   x = 826,588,074.80/42,537.82
6. Step 6: Final answer
   x = 19,431.84