Finding the Fourth Proportional to 13,128.29, 19,696.40 and 4,693.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128.29 : 19,696.40 = 4,693.69 : x
2. Step 2: Convert to fraction form
   13,128.29/19,696.40 = 4,693.69/x
3. Step 3: Cross multiply
   13,128.29x = 19,696.40 × 4,693.69
4. Step 4: Simplify right side
   13,128.29x = 92,448,795.72
5. Step 5: Solve for x
   x = 92,448,795.72/13,128.29
6. Step 6: Final answer
   x = 7,041.95