Finding the Fourth Proportional to 42,535.42, 63,798.57 and 12,953.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,535.42 : 63,798.57 = 12,953.51 : x
2. Step 2: Convert to fraction form
   42,535.42/63,798.57 = 12,953.51/x
3. Step 3: Cross multiply
   42,535.42x = 63,798.57 × 12,953.51
4. Step 4: Simplify right side
   42,535.42x = 826,415,414.48
5. Step 5: Solve for x
   x = 826,415,414.48/42,535.42
6. Step 6: Final answer
   x = 19,428.88