Finding the Fourth Proportional to 13,976.02, 19,276.55 and 10,142.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,976.02 : 19,276.55 = 10,142.19 : x
2. Step 2: Convert to fraction form
   13,976.02/19,276.55 = 10,142.19/x
3. Step 3: Cross multiply
   13,976.02x = 19,276.55 × 10,142.19
4. Step 4: Simplify right side
   13,976.02x = 195,506,285.55
5. Step 5: Solve for x
   x = 195,506,285.55/13,976.02
6. Step 6: Final answer
   x = 13,988.70