Finding the Fourth Proportional to 14,446.82, 19,925.55 and 9,978.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,446.82 : 19,925.55 = 9,978.05 : x
2. Step 2: Convert to fraction form
   14,446.82/19,925.55 = 9,978.05/x
3. Step 3: Cross multiply
   14,446.82x = 19,925.55 × 9,978.05
4. Step 4: Simplify right side
   14,446.82x = 198,818,034.55
5. Step 5: Solve for x
   x = 198,818,034.55/14,446.82
6. Step 6: Final answer
   x = 13,762.07