Finding the Fourth Proportional to 13,066,720.61, 19,598,803.72 and 3,968,897.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066,720.61 : 19,598,803.72 = 3,968,897.18 : x
2. Step 2: Convert to fraction form
   13,066,720.61/19,598,803.72 = 3,968,897.18/x
3. Step 3: Cross multiply
   13,066,720.61x = 19,598,803.72 × 3,968,897.18
4. Step 4: Simplify right side
   13,066,720.61x = 77,785,636,815,681.52
5. Step 5: Solve for x
   x = 77,785,636,815,681.52/13,066,720.61
6. Step 6: Final answer
   x = 5,952,957.83