Finding the Fourth Proportional to 13,870.91, 19,141.85 and 7,583.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.91 : 19,141.85 = 7,583.28 : x
2. Step 2: Convert to fraction form
   13,870.91/19,141.85 = 7,583.28/x
3. Step 3: Cross multiply
   13,870.91x = 19,141.85 × 7,583.28
4. Step 4: Simplify right side
   13,870.91x = 145,158,008.27
5. Step 5: Solve for x
   x = 145,158,008.27/13,870.91
6. Step 6: Final answer
   x = 10,464.93