Finding the Fourth Proportional to 13,065.71, 19,603.82 and 5,275.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,065.71 : 19,603.82 = 5,275.13 : x
2. Step 2: Convert to fraction form
   13,065.71/19,603.82 = 5,275.13/x
3. Step 3: Cross multiply
   13,065.71x = 19,603.82 × 5,275.13
4. Step 4: Simplify right side
   13,065.71x = 103,412,614.17
5. Step 5: Solve for x
   x = 103,412,614.17/13,065.71
6. Step 6: Final answer
   x = 7,914.81