Finding the Fourth Proportional to 11,071.71, 16,609.86 and 5,225.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,071.71 : 16,609.86 = 5,225.13 : x
2. Step 2: Convert to fraction form
   11,071.71/16,609.86 = 5,225.13/x
3. Step 3: Cross multiply
   11,071.71x = 16,609.86 × 5,225.13
4. Step 4: Simplify right side
   11,071.71x = 86,788,677.78
5. Step 5: Solve for x
   x = 86,788,677.78/11,071.71
6. Step 6: Final answer
   x = 7,838.78