Finding the Fourth Proportional to 42,574.96, 63,862.25 and 12,992.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,574.96 : 63,862.25 = 12,992.69 : x
2. Step 2: Convert to fraction form
   42,574.96/63,862.25 = 12,992.69/x
3. Step 3: Cross multiply
   42,574.96x = 63,862.25 × 12,992.69
4. Step 4: Simplify right side
   42,574.96x = 829,742,609.09
5. Step 5: Solve for x
   x = 829,742,609.09/42,574.96
6. Step 6: Final answer
   x = 19,488.98