Finding the Fourth Proportional to 13,913.56, 19,200.30 and 7,945.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,913.56 : 19,200.30 = 7,945.06 : x
2. Step 2: Convert to fraction form
   13,913.56/19,200.30 = 7,945.06/x
3. Step 3: Cross multiply
   13,913.56x = 19,200.30 × 7,945.06
4. Step 4: Simplify right side
   13,913.56x = 152,547,535.52
5. Step 5: Solve for x
   x = 152,547,535.52/13,913.56
6. Step 6: Final answer
   x = 10,963.95