Finding the Fourth Proportional to 42,536.34, 63,807.12 and 12,956.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,536.34 : 63,807.12 = 12,956.22 : x
2. Step 2: Convert to fraction form
   42,536.34/63,807.12 = 12,956.22/x
3. Step 3: Cross multiply
   42,536.34x = 63,807.12 × 12,956.22
4. Step 4: Simplify right side
   42,536.34x = 826,699,084.29
5. Step 5: Solve for x
   x = 826,699,084.29/42,536.34
6. Step 6: Final answer
   x = 19,435.12