Finding the Fourth Proportional to 13,940.10, 19,235.94 and 7,970.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,940.10 : 19,235.94 = 7,970.52 : x
2. Step 2: Convert to fraction form
   13,940.10/19,235.94 = 7,970.52/x
3. Step 3: Cross multiply
   13,940.10x = 19,235.94 × 7,970.52
4. Step 4: Simplify right side
   13,940.10x = 153,320,444.49
5. Step 5: Solve for x
   x = 153,320,444.49/13,940.10
6. Step 6: Final answer
   x = 10,998.52