Finding the Fourth Proportional to 10,561.03, 14,580.28 and 7,886.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,561.03 : 14,580.28 = 7,886.99 : x
2. Step 2: Convert to fraction form
   10,561.03/14,580.28 = 7,886.99/x
3. Step 3: Cross multiply
   10,561.03x = 14,580.28 × 7,886.99
4. Step 4: Simplify right side
   10,561.03x = 114,994,505.82
5. Step 5: Solve for x
   x = 114,994,505.82/10,561.03
6. Step 6: Final answer
   x = 10,888.57