Finding the Fourth Proportional to 19,635.83, 29,443.91 and 9,780.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,635.83 : 29,443.91 = 9,780.56 : x
2. Step 2: Convert to fraction form
   19,635.83/29,443.91 = 9,780.56/x
3. Step 3: Cross multiply
   19,635.83x = 29,443.91 × 9,780.56
4. Step 4: Simplify right side
   19,635.83x = 287,977,781.17
5. Step 5: Solve for x
   x = 287,977,781.17/19,635.83
6. Step 6: Final answer
   x = 14,665.94