Finding the Fourth Proportional to 13,061.35, 17,983.69 and 11,526.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.35 : 17,983.69 = 11,526.70 : x
2. Step 2: Convert to fraction form
   13,061.35/17,983.69 = 11,526.70/x
3. Step 3: Cross multiply
   13,061.35x = 17,983.69 × 11,526.70
4. Step 4: Simplify right side
   13,061.35x = 207,292,541.89
5. Step 5: Solve for x
   x = 207,292,541.89/13,061.35
6. Step 6: Final answer
   x = 15,870.69