Finding the Fourth Proportional to 11,430.62, 17,148.05 and 5,191.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,430.62 : 17,148.05 = 5,191.07 : x
2. Step 2: Convert to fraction form
   11,430.62/17,148.05 = 5,191.07/x
3. Step 3: Cross multiply
   11,430.62x = 17,148.05 × 5,191.07
4. Step 4: Simplify right side
   11,430.62x = 89,016,616.22
5. Step 5: Solve for x
   x = 89,016,616.22/11,430.62
6. Step 6: Final answer
   x = 7,787.56