Finding the Fourth Proportional to 13,915.56, 19,203.06 and 7,947.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.56 : 19,203.06 = 7,947.06 : x
2. Step 2: Convert to fraction form
   13,915.56/19,203.06 = 7,947.06/x
3. Step 3: Cross multiply
   13,915.56x = 19,203.06 × 7,947.06
4. Step 4: Simplify right side
   13,915.56x = 152,607,870.00
5. Step 5: Solve for x
   x = 152,607,870.00/13,915.56
6. Step 6: Final answer
   x = 10,966.71