Finding the Fourth Proportional to 13,903.76, 19,182.30 and 7,931.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,903.76 : 19,182.30 = 7,931.12 : x
2. Step 2: Convert to fraction form
   13,903.76/19,182.30 = 7,931.12/x
3. Step 3: Cross multiply
   13,903.76x = 19,182.30 × 7,931.12
4. Step 4: Simplify right side
   13,903.76x = 152,137,123.18
5. Step 5: Solve for x
   x = 152,137,123.18/13,903.76
6. Step 6: Final answer
   x = 10,942.16