Finding the Fourth Proportional to 10,069.59, 15,088.86 and 5,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,069.59 : 15,088.86 = 5,390.22 : x
2. Step 2: Convert to fraction form
   10,069.59/15,088.86 = 5,390.22/x
3. Step 3: Cross multiply
   10,069.59x = 15,088.86 × 5,390.22
4. Step 4: Simplify right side
   10,069.59x = 81,332,274.95
5. Step 5: Solve for x
   x = 81,332,274.95/10,069.59
6. Step 6: Final answer
   x = 8,077.02