Finding the Fourth Proportional to 25,300.64, 34,916.24 and 13,970.09

Step by Step Solution

1. Step 1: Write the proportion equation
   25,300.64 : 34,916.24 = 13,970.09 : x
2. Step 2: Convert to fraction form
   25,300.64/34,916.24 = 13,970.09/x
3. Step 3: Cross multiply
   25,300.64x = 34,916.24 × 13,970.09
4. Step 4: Simplify right side
   25,300.64x = 487,783,015.26
5. Step 5: Solve for x
   x = 487,783,015.26/25,300.64
6. Step 6: Final answer
   x = 19,279.47