Finding the Fourth Proportional to 42,121.52, 63,182.36 and 10,956.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,121.52 : 63,182.36 = 10,956.72 : x
2. Step 2: Convert to fraction form
   42,121.52/63,182.36 = 10,956.72/x
3. Step 3: Cross multiply
   42,121.52x = 63,182.36 × 10,956.72
4. Step 4: Simplify right side
   42,121.52x = 692,271,427.46
5. Step 5: Solve for x
   x = 692,271,427.46/42,121.52
6. Step 6: Final answer
   x = 16,435.10