Finding the Fourth Proportional to 9,638,414.15, 13,300,932.80 and 5,228,128.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638,414.15 : 13,300,932.80 = 5,228,128.76 : x
2. Step 2: Convert to fraction form
   9,638,414.15/13,300,932.80 = 5,228,128.76/x
3. Step 3: Cross multiply
   9,638,414.15x = 13,300,932.80 × 5,228,128.76
4. Step 4: Simplify right side
   9,638,414.15x = 69,538,989,213,862.02
5. Step 5: Solve for x
   x = 69,538,989,213,862.02/9,638,414.15
6. Step 6: Final answer
   x = 7,214,774.98