Finding the Fourth Proportional to 13,905.69, 19,189.76 and 7,617.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,905.69 : 19,189.76 = 7,617.93 : x
2. Step 2: Convert to fraction form
   13,905.69/19,189.76 = 7,617.93/x
3. Step 3: Cross multiply
   13,905.69x = 19,189.76 × 7,617.93
4. Step 4: Simplify right side
   13,905.69x = 146,186,210.31
5. Step 5: Solve for x
   x = 146,186,210.31/13,905.69
6. Step 6: Final answer
   x = 10,512.69