Finding the Fourth Proportional to 13,881.54, 19,156.50 and 7,913.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,881.54 : 19,156.50 = 7,913.46 : x
2. Step 2: Convert to fraction form
   13,881.54/19,156.50 = 7,913.46/x
3. Step 3: Cross multiply
   13,881.54x = 19,156.50 × 7,913.46
4. Step 4: Simplify right side
   13,881.54x = 151,594,196.49
5. Step 5: Solve for x
   x = 151,594,196.49/13,881.54
6. Step 6: Final answer
   x = 10,920.56