Finding the Fourth Proportional to 42,554.30, 63,841.16 and 12,972.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,554.30 : 63,841.16 = 12,972.69 : x
2. Step 2: Convert to fraction form
   42,554.30/63,841.16 = 12,972.69/x
3. Step 3: Cross multiply
   42,554.30x = 63,841.16 × 12,972.69
4. Step 4: Simplify right side
   42,554.30x = 828,191,610.35
5. Step 5: Solve for x
   x = 828,191,610.35/42,554.30
6. Step 6: Final answer
   x = 19,462.00