Finding the Fourth Proportional to 9,139,027.20, 12,612,359.52 and 5,064,558.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,027.20 : 12,612,359.52 = 5,064,558.72 : x
2. Step 2: Convert to fraction form
   9,139,027.20/12,612,359.52 = 5,064,558.72/x
3. Step 3: Cross multiply
   9,139,027.20x = 12,612,359.52 × 5,064,558.72
4. Step 4: Simplify right side
   9,139,027.20x = 63,876,035,386,791.01
5. Step 5: Solve for x
   x = 63,876,035,386,791.01/9,139,027.20
6. Step 6: Final answer
   x = 6,989,369.22