Finding the Fourth Proportional to 7,003,655.28, 9,665,192.16 and 3,947,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003,655.28 : 9,665,192.16 = 3,947,868.72 : x
2. Step 2: Convert to fraction form
   7,003,655.28/9,665,192.16 = 3,947,868.72/x
3. Step 3: Cross multiply
   7,003,655.28x = 9,665,192.16 × 3,947,868.72
4. Step 4: Simplify right side
   7,003,655.28x = 38,156,909,801,253.23
5. Step 5: Solve for x
   x = 38,156,909,801,253.23/7,003,655.28
6. Step 6: Final answer
   x = 5,448,142.19