Finding the Fourth Proportional to 11,061.45, 15,511.95 and 11,061.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.45 : 15,511.95 = 11,061.45 : x
2. Step 2: Convert to fraction form
   11,061.45/15,511.95 = 11,061.45/x
3. Step 3: Cross multiply
   11,061.45x = 15,511.95 × 11,061.45
4. Step 4: Simplify right side
   11,061.45x = 171,584,659.33
5. Step 5: Solve for x
   x = 171,584,659.33/11,061.45
6. Step 6: Final answer
   x = 15,511.95