Finding the Fourth Proportional to 9,111.02, 12,573.34 and 5,077.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.02 : 12,573.34 = 5,077.74 : x
2. Step 2: Convert to fraction form
   9,111.02/12,573.34 = 5,077.74/x
3. Step 3: Cross multiply
   9,111.02x = 12,573.34 × 5,077.74
4. Step 4: Simplify right side
   9,111.02x = 63,844,088.58
5. Step 5: Solve for x
   x = 63,844,088.58/9,111.02
6. Step 6: Final answer
   x = 7,007.35