Finding the Fourth Proportional to 13,906.78, 19,191.20 and 7,533.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,906.78 : 19,191.20 = 7,533.25 : x
2. Step 2: Convert to fraction form
   13,906.78/19,191.20 = 7,533.25/x
3. Step 3: Cross multiply
   13,906.78x = 19,191.20 × 7,533.25
4. Step 4: Simplify right side
   13,906.78x = 144,572,021.76
5. Step 5: Solve for x
   x = 144,572,021.76/13,906.78
6. Step 6: Final answer
   x = 10,395.80