Finding the Fourth Proportional to 10,603.46, 15,886.10 and 5,917.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,603.46 : 15,886.10 = 5,917.88 : x
2. Step 2: Convert to fraction form
   10,603.46/15,886.10 = 5,917.88/x
3. Step 3: Cross multiply
   10,603.46x = 15,886.10 × 5,917.88
4. Step 4: Simplify right side
   10,603.46x = 94,011,968.83
5. Step 5: Solve for x
   x = 94,011,968.83/10,603.46
6. Step 6: Final answer
   x = 8,866.16