Finding the Fourth Proportional to 9,157,522.80, 12,637,430.28 and 5,721,756.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,157,522.80 : 12,637,430.28 = 5,721,756.60 : x
2. Step 2: Convert to fraction form
   9,157,522.80/12,637,430.28 = 5,721,756.60/x
3. Step 3: Cross multiply
   9,157,522.80x = 12,637,430.28 × 5,721,756.60
4. Step 4: Simplify right side
   9,157,522.80x = 72,308,300,111,629.84
5. Step 5: Solve for x
   x = 72,308,300,111,629.84/9,157,522.80
6. Step 6: Final answer
   x = 7,896,054.61