Finding the Fourth Proportional to 42,541.32, 63,809.76 and 12,958.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,541.32 : 63,809.76 = 12,958.56 : x
2. Step 2: Convert to fraction form
   42,541.32/63,809.76 = 12,958.56/x
3. Step 3: Cross multiply
   42,541.32x = 63,809.76 × 12,958.56
4. Step 4: Simplify right side
   42,541.32x = 826,882,603.55
5. Step 5: Solve for x
   x = 826,882,603.55/42,541.32
6. Step 6: Final answer
   x = 19,437.16