Finding the Fourth Proportional to 25,109.47, 34,650.97 and 13,779.16

Step by Step Solution

1. Step 1: Write the proportion equation
   25,109.47 : 34,650.97 = 13,779.16 : x
2. Step 2: Convert to fraction form
   25,109.47/34,650.97 = 13,779.16/x
3. Step 3: Cross multiply
   25,109.47x = 34,650.97 × 13,779.16
4. Step 4: Simplify right side
   25,109.47x = 477,461,086.53
5. Step 5: Solve for x
   x = 477,461,086.53/25,109.47
6. Step 6: Final answer
   x = 19,015.18