Finding the Fourth Proportional to 10,876.99, 15,012.41 and 7,100.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,876.99 : 15,012.41 = 7,100.77 : x
2. Step 2: Convert to fraction form
   10,876.99/15,012.41 = 7,100.77/x
3. Step 3: Cross multiply
   10,876.99x = 15,012.41 × 7,100.77
4. Step 4: Simplify right side
   10,876.99x = 106,599,670.56
5. Step 5: Solve for x
   x = 106,599,670.56/10,876.99
6. Step 6: Final answer
   x = 9,800.48