Finding the Fourth Proportional to 10,111.93, 15,088.79 and 9,061.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.93 : 15,088.79 = 9,061.22 : x
2. Step 2: Convert to fraction form
   10,111.93/15,088.79 = 9,061.22/x
3. Step 3: Cross multiply
   10,111.93x = 15,088.79 × 9,061.22
4. Step 4: Simplify right side
   10,111.93x = 136,722,845.72
5. Step 5: Solve for x
   x = 136,722,845.72/10,111.93
6. Step 6: Final answer
   x = 13,520.94