Finding the Fourth Proportional to 13,904.31, 19,188.42 and 7,617.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,904.31 : 19,188.42 = 7,617.09 : x
2. Step 2: Convert to fraction form
   13,904.31/19,188.42 = 7,617.09/x
3. Step 3: Cross multiply
   13,904.31x = 19,188.42 × 7,617.09
4. Step 4: Simplify right side
   13,904.31x = 146,159,922.10
5. Step 5: Solve for x
   x = 146,159,922.10/13,904.31
6. Step 6: Final answer
   x = 10,511.84