Finding the Fourth Proportional to 13,907.94, 19,192.86 and 7,620.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,907.94 : 19,192.86 = 7,620.18 : x
2. Step 2: Convert to fraction form
   13,907.94/19,192.86 = 7,620.18/x
3. Step 3: Cross multiply
   13,907.94x = 19,192.86 × 7,620.18
4. Step 4: Simplify right side
   13,907.94x = 146,253,047.91
5. Step 5: Solve for x
   x = 146,253,047.91/13,907.94
6. Step 6: Final answer
   x = 10,515.80