Finding the Fourth Proportional to 19,978.39, 29,969.25 and 5,746.93

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978.39 : 29,969.25 = 5,746.93 : x
2. Step 2: Convert to fraction form
   19,978.39/29,969.25 = 5,746.93/x
3. Step 3: Cross multiply
   19,978.39x = 29,969.25 × 5,746.93
4. Step 4: Simplify right side
   19,978.39x = 172,231,181.90
5. Step 5: Solve for x
   x = 172,231,181.90/19,978.39
6. Step 6: Final answer
   x = 8,620.87