Finding the Fourth Proportional to 9,139,647.56, 13,627,760.47 and 8,888,541.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,647.56 : 13,627,760.47 = 8,888,541.72 : x
2. Step 2: Convert to fraction form
   9,139,647.56/13,627,760.47 = 8,888,541.72/x
3. Step 3: Cross multiply
   9,139,647.56x = 13,627,760.47 × 8,888,541.72
4. Step 4: Simplify right side
   9,139,647.56x = 121,130,917,487,761.83
5. Step 5: Solve for x
   x = 121,130,917,487,761.83/9,139,647.56
6. Step 6: Final answer
   x = 13,253,346.66