Finding the Fourth Proportional to 10,401.30, 15,569.55 and 10,077.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.30 : 15,569.55 = 10,077.30 : x
2. Step 2: Convert to fraction form
   10,401.30/15,569.55 = 10,077.30/x
3. Step 3: Cross multiply
   10,401.30x = 15,569.55 × 10,077.30
4. Step 4: Simplify right side
   10,401.30x = 156,899,026.22
5. Step 5: Solve for x
   x = 156,899,026.22/10,401.30
6. Step 6: Final answer
   x = 15,084.56